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chromium / external / github.com / git / git / refs/tags/v2.4.4 / . / remote.c
blob: 68901b0070d257dc31b59e9292cd7b6d7ef2e952 [file] [log] [blame]
Daniel Barkalow5751f492007-05-12 15:45:53[diff] [blame]1#include "cache.h"
2#include "remote.h"
3#include "refs.h"
Junio C Hamano6d21bf92008-07-02 07:51:18[diff] [blame]4#include "commit.h"
5#include "diff.h"
6#include "revision.h"
Alexander Potashev8ca12c02009-01-10 12:07:50[diff] [blame]7#include "dir.h"
Jay Soffianec8452d2009-02-25 08:32:12[diff] [blame]8#include "tag.h"
Julian Phillips73cf0822009-10-25 21:28:11[diff] [blame]9#include "string-list.h"
Jeff Kinged81c762012-05-21 22:19:28[diff] [blame]10#include "mergesort.h"
Daniel Barkalow5751f492007-05-12 15:45:53[diff] [blame]11
Felipe Contreras6ddba5e2012-02-22 22:43:41[diff] [blame]12enum map_direction { FROM_SRC, FROM_DST };
13
Daniel Barkalowe0aaa292008-04-17 23:32:35[diff] [blame]14static struct refspec s_tag_refspec = {
15 0,
16 1,
Junio C Hamanob84c3432008-05-25 20:38:44[diff] [blame]17 0,
Junio C Hamano6e7b66e2013-01-29 22:02:15[diff] [blame]18 0,
Daniel Barkalow08fbdb32009-03-07 06:11:36[diff] [blame]19 "refs/tags/*",
20 "refs/tags/*"
Daniel Barkalowe0aaa292008-04-17 23:32:35[diff] [blame]21};
22
23const struct refspec *tag_refspec = &s_tag_refspec;
24
Junio C Hamano844112c2008-02-25 06:25:04[diff] [blame]25struct counted_string {
26 size_t len;
27 const char *s;
28};
Daniel Barkalow55029ae2008-02-20 18:43:53[diff] [blame]29struct rewrite {
30 const char *base;
Junio C Hamano844112c2008-02-25 06:25:04[diff] [blame]31 size_t baselen;
32 struct counted_string *instead_of;
Daniel Barkalow55029ae2008-02-20 18:43:53[diff] [blame]33 int instead_of_nr;
34 int instead_of_alloc;
35};
Josh Triplettd071d942009-09-07 08:56:00[diff] [blame]36struct rewrites {
37 struct rewrite **rewrite;
38 int rewrite_alloc;
39 int rewrite_nr;
40};
Daniel Barkalow55029ae2008-02-20 18:43:53[diff] [blame]41
Daniel Barkalow5751f492007-05-12 15:45:53[diff] [blame]42static struct remote **remotes;
Daniel Barkalow2d313472008-02-19 04:41:41[diff] [blame]43static int remotes_alloc;
44static int remotes_nr;
Patrick Reynoldsd0da0032014-07-29 14:43:39[diff] [blame]45static struct hashmap remotes_hash;
Daniel Barkalow5751f492007-05-12 15:45:53[diff] [blame]46
Daniel Barkalowcf818342007-09-11 03:02:56[diff] [blame]47static struct branch **branches;
Daniel Barkalow2d313472008-02-19 04:41:41[diff] [blame]48static int branches_alloc;
49static int branches_nr;
Daniel Barkalowcf818342007-09-11 03:02:56[diff] [blame]50
51static struct branch *current_branch;
52static const char *default_remote_name;
Jeff King98b406f2014-02-24 08:59:03[diff] [blame]53static const char *branch_pushremote_name;
Ramkumar Ramachandraf24f7152013-04-02 07:40:32[diff] [blame]54static const char *pushremote_name;
Daniel Barkalowfa685bd2009-03-11 05:47:20[diff] [blame]55static int explicit_default_remote_name;
Daniel Barkalowcf818342007-09-11 03:02:56[diff] [blame]56
Josh Triplettd071d942009-09-07 08:56:00[diff] [blame]57static struct rewrites rewrites;
Josh Triplett1c2eafb2009-09-07 08:56:33[diff] [blame]58static struct rewrites rewrites_push;
Daniel Barkalow55029ae2008-02-20 18:43:53[diff] [blame]59
Daniel Barkalow5751f492007-05-12 15:45:53[diff] [blame]60#define BUF_SIZE (2048)
61static char buffer[BUF_SIZE];
62
Daniel Barkalow0a4da292009-11-18 01:42:23[diff] [blame]63static int valid_remote(const struct remote *remote)
64{
Daniel Barkalowc578f512009-11-18 01:42:25[diff] [blame]65 return (!!remote->url) || (!!remote->foreign_vcs);
Daniel Barkalow0a4da292009-11-18 01:42:23[diff] [blame]66}
67
Josh Triplettd071d942009-09-07 08:56:00[diff] [blame]68static const char *alias_url(const char *url, struct rewrites *r)
Daniel Barkalow55029ae2008-02-20 18:43:53[diff] [blame]69{
70 int i, j;
Junio C Hamano844112c2008-02-25 06:25:04[diff] [blame]71 char *ret;
72 struct counted_string *longest;
73 int longest_i;
74
75 longest = NULL;
76 longest_i = -1;
Josh Triplettd071d942009-09-07 08:56:00[diff] [blame]77 for (i = 0; i < r->rewrite_nr; i++) {
78 if (!r->rewrite[i])
Daniel Barkalow55029ae2008-02-20 18:43:53[diff] [blame]79 continue;
Josh Triplettd071d942009-09-07 08:56:00[diff] [blame]80 for (j = 0; j < r->rewrite[i]->instead_of_nr; j++) {
Christian Couder59556542013-11-30 20:55:40[diff] [blame]81 if (starts_with(url, r->rewrite[i]->instead_of[j].s) &&
Junio C Hamano844112c2008-02-25 06:25:04[diff] [blame]82 (!longest ||
Josh Triplettd071d942009-09-07 08:56:00[diff] [blame]83 longest->len < r->rewrite[i]->instead_of[j].len)) {
84 longest = &(r->rewrite[i]->instead_of[j]);
Junio C Hamano844112c2008-02-25 06:25:04[diff] [blame]85 longest_i = i;
Daniel Barkalow55029ae2008-02-20 18:43:53[diff] [blame]86 }
87 }
88 }
Junio C Hamano844112c2008-02-25 06:25:04[diff] [blame]89 if (!longest)
90 return url;
91
Josh Triplettd071d942009-09-07 08:56:00[diff] [blame]92 ret = xmalloc(r->rewrite[longest_i]->baselen +
Junio C Hamano844112c2008-02-25 06:25:04[diff] [blame]93 (strlen(url) - longest->len) + 1);
Josh Triplettd071d942009-09-07 08:56:00[diff] [blame]94 strcpy(ret, r->rewrite[longest_i]->base);
95 strcpy(ret + r->rewrite[longest_i]->baselen, url + longest->len);
Junio C Hamano844112c2008-02-25 06:25:04[diff] [blame]96 return ret;
Daniel Barkalow55029ae2008-02-20 18:43:53[diff] [blame]97}
98
Daniel Barkalow5751f492007-05-12 15:45:53[diff] [blame]99static void add_push_refspec(struct remote *remote, const char *ref)
100{
Daniel Barkalow2d313472008-02-19 04:41:41[diff] [blame]101 ALLOC_GROW(remote->push_refspec,
102 remote->push_refspec_nr + 1,
103 remote->push_refspec_alloc);
104 remote->push_refspec[remote->push_refspec_nr++] = ref;
Daniel Barkalow5751f492007-05-12 15:45:53[diff] [blame]105}
106
Daniel Barkalow5d46c9d2007-05-12 15:46:03[diff] [blame]107static void add_fetch_refspec(struct remote *remote, const char *ref)
108{
Daniel Barkalow2d313472008-02-19 04:41:41[diff] [blame]109 ALLOC_GROW(remote->fetch_refspec,
110 remote->fetch_refspec_nr + 1,
111 remote->fetch_refspec_alloc);
112 remote->fetch_refspec[remote->fetch_refspec_nr++] = ref;
Daniel Barkalow5d46c9d2007-05-12 15:46:03[diff] [blame]113}
114
Shawn O. Pearce28b91f82007-09-19 04:49:27[diff] [blame]115static void add_url(struct remote *remote, const char *url)
Daniel Barkalow5751f492007-05-12 15:45:53[diff] [blame]116{
Daniel Barkalow2d313472008-02-19 04:41:41[diff] [blame]117 ALLOC_GROW(remote->url, remote->url_nr + 1, remote->url_alloc);
118 remote->url[remote->url_nr++] = url;
Daniel Barkalow5751f492007-05-12 15:45:53[diff] [blame]119}
120
Michael J Gruber20346232009-06-09 16:01:34[diff] [blame]121static void add_pushurl(struct remote *remote, const char *pushurl)
122{
123 ALLOC_GROW(remote->pushurl, remote->pushurl_nr + 1, remote->pushurl_alloc);
124 remote->pushurl[remote->pushurl_nr++] = pushurl;
125}
126
Josh Triplett1c2eafb2009-09-07 08:56:33[diff] [blame]127static void add_pushurl_alias(struct remote *remote, const char *url)
128{
129 const char *pushurl = alias_url(url, &rewrites_push);
130 if (pushurl != url)
131 add_pushurl(remote, pushurl);
132}
133
134static void add_url_alias(struct remote *remote, const char *url)
135{
136 add_url(remote, alias_url(url, &rewrites));
137 add_pushurl_alias(remote, url);
138}
139
Patrick Reynoldsd0da0032014-07-29 14:43:39[diff] [blame]140struct remotes_hash_key {
141 const char *str;
142 int len;
143};
144
145static int remotes_hash_cmp(const struct remote *a, const struct remote *b, const struct remotes_hash_key *key)
146{
147 if (key)
148 return strncmp(a->name, key->str, key->len) || a->name[key->len];
149 else
150 return strcmp(a->name, b->name);
151}
152
153static inline void init_remotes_hash(void)
154{
155 if (!remotes_hash.cmpfn)
156 hashmap_init(&remotes_hash, (hashmap_cmp_fn)remotes_hash_cmp, 0);
157}
158
Daniel Barkalow5751f492007-05-12 15:45:53[diff] [blame]159static struct remote *make_remote(const char *name, int len)
160{
Patrick Reynoldsd0da0032014-07-29 14:43:39[diff] [blame]161 struct remote *ret, *replaced;
162 struct remotes_hash_key lookup;
163 struct hashmap_entry lookup_entry;
Daniel Barkalow5751f492007-05-12 15:45:53[diff] [blame]164
Patrick Reynoldsd0da0032014-07-29 14:43:39[diff] [blame]165 if (!len)
166 len = strlen(name);
167
168 init_remotes_hash();
169 lookup.str = name;
170 lookup.len = len;
171 hashmap_entry_init(&lookup_entry, memhash(name, len));
172
173 if ((ret = hashmap_get(&remotes_hash, &lookup_entry, &lookup)) != NULL)
174 return ret;
Daniel Barkalow5751f492007-05-12 15:45:53[diff] [blame]175
Daniel Barkalow2d313472008-02-19 04:41:41[diff] [blame]176 ret = xcalloc(1, sizeof(struct remote));
Michael Schubert737c5a92013-07-13 09:36:24[diff] [blame]177 ret->prune = -1; /* unspecified */
Daniel Barkalow2d313472008-02-19 04:41:41[diff] [blame]178 ALLOC_GROW(remotes, remotes_nr + 1, remotes_alloc);
179 remotes[remotes_nr++] = ret;
Patrick Reynoldsd0da0032014-07-29 14:43:39[diff] [blame]180 ret->name = xstrndup(name, len);
181
182 hashmap_entry_init(ret, lookup_entry.hash);
183 replaced = hashmap_put(&remotes_hash, ret);
184 assert(replaced == NULL); /* no previous entry overwritten */
Daniel Barkalow2d313472008-02-19 04:41:41[diff] [blame]185 return ret;
Daniel Barkalow5751f492007-05-12 15:45:53[diff] [blame]186}
187
Daniel Barkalowcf818342007-09-11 03:02:56[diff] [blame]188static void add_merge(struct branch *branch, const char *name)
189{
Daniel Barkalow2d313472008-02-19 04:41:41[diff] [blame]190 ALLOC_GROW(branch->merge_name, branch->merge_nr + 1,
191 branch->merge_alloc);
192 branch->merge_name[branch->merge_nr++] = name;
Daniel Barkalowcf818342007-09-11 03:02:56[diff] [blame]193}
194
195static struct branch *make_branch(const char *name, int len)
196{
Daniel Barkalow2d313472008-02-19 04:41:41[diff] [blame]197 struct branch *ret;
198 int i;
Daniel Barkalowcf818342007-09-11 03:02:56[diff] [blame]199
Daniel Barkalow2d313472008-02-19 04:41:41[diff] [blame]200 for (i = 0; i < branches_nr; i++) {
201 if (len ? (!strncmp(name, branches[i]->name, len) &&
202 !branches[i]->name[len]) :
203 !strcmp(name, branches[i]->name))
204 return branches[i];
Daniel Barkalowcf818342007-09-11 03:02:56[diff] [blame]205 }
206
Daniel Barkalow2d313472008-02-19 04:41:41[diff] [blame]207 ALLOC_GROW(branches, branches_nr + 1, branches_alloc);
208 ret = xcalloc(1, sizeof(struct branch));
209 branches[branches_nr++] = ret;
Daniel Barkalowcf818342007-09-11 03:02:56[diff] [blame]210 if (len)
Daniel Barkalow2d313472008-02-19 04:41:41[diff] [blame]211 ret->name = xstrndup(name, len);
Daniel Barkalowcf818342007-09-11 03:02:56[diff] [blame]212 else
Daniel Barkalow2d313472008-02-19 04:41:41[diff] [blame]213 ret->name = xstrdup(name);
Jeff Kingfa3f60b2014-06-18 20:02:13[diff] [blame]214 ret->refname = xstrfmt("refs/heads/%s", ret->name);
Daniel Barkalowcf818342007-09-11 03:02:56[diff] [blame]215
Daniel Barkalow2d313472008-02-19 04:41:41[diff] [blame]216 return ret;
Daniel Barkalowcf818342007-09-11 03:02:56[diff] [blame]217}
218
Josh Triplettd071d942009-09-07 08:56:00[diff] [blame]219static struct rewrite *make_rewrite(struct rewrites *r, const char *base, int len)
Daniel Barkalow55029ae2008-02-20 18:43:53[diff] [blame]220{
221 struct rewrite *ret;
222 int i;
223
Josh Triplettd071d942009-09-07 08:56:00[diff] [blame]224 for (i = 0; i < r->rewrite_nr; i++) {
Junio C Hamano844112c2008-02-25 06:25:04[diff] [blame]225 if (len
Josh Triplettd071d942009-09-07 08:56:00[diff] [blame]226 ? (len == r->rewrite[i]->baselen &&
227 !strncmp(base, r->rewrite[i]->base, len))
228 : !strcmp(base, r->rewrite[i]->base))
229 return r->rewrite[i];
Daniel Barkalow55029ae2008-02-20 18:43:53[diff] [blame]230 }
231
Josh Triplettd071d942009-09-07 08:56:00[diff] [blame]232 ALLOC_GROW(r->rewrite, r->rewrite_nr + 1, r->rewrite_alloc);
Daniel Barkalow55029ae2008-02-20 18:43:53[diff] [blame]233 ret = xcalloc(1, sizeof(struct rewrite));
Josh Triplettd071d942009-09-07 08:56:00[diff] [blame]234 r->rewrite[r->rewrite_nr++] = ret;
Junio C Hamano844112c2008-02-25 06:25:04[diff] [blame]235 if (len) {
Daniel Barkalow55029ae2008-02-20 18:43:53[diff] [blame]236 ret->base = xstrndup(base, len);
Junio C Hamano844112c2008-02-25 06:25:04[diff] [blame]237 ret->baselen = len;
238 }
239 else {
Daniel Barkalow55029ae2008-02-20 18:43:53[diff] [blame]240 ret->base = xstrdup(base);
Junio C Hamano844112c2008-02-25 06:25:04[diff] [blame]241 ret->baselen = strlen(base);
242 }
Daniel Barkalow55029ae2008-02-20 18:43:53[diff] [blame]243 return ret;
244}
245
246static void add_instead_of(struct rewrite *rewrite, const char *instead_of)
247{
248 ALLOC_GROW(rewrite->instead_of, rewrite->instead_of_nr + 1, rewrite->instead_of_alloc);
Junio C Hamano844112c2008-02-25 06:25:04[diff] [blame]249 rewrite->instead_of[rewrite->instead_of_nr].s = instead_of;
250 rewrite->instead_of[rewrite->instead_of_nr].len = strlen(instead_of);
251 rewrite->instead_of_nr++;
Daniel Barkalow55029ae2008-02-20 18:43:53[diff] [blame]252}
253
Daniel Barkalow5751f492007-05-12 15:45:53[diff] [blame]254static void read_remotes_file(struct remote *remote)
255{
256 FILE *f = fopen(git_path("remotes/%s", remote->name), "r");
257
258 if (!f)
259 return;
Miklos Vajna89cf4c72008-11-10 20:43:00[diff] [blame]260 remote->origin = REMOTE_REMOTES;
Daniel Barkalow5751f492007-05-12 15:45:53[diff] [blame]261 while (fgets(buffer, BUF_SIZE, f)) {
262 int value_list;
263 char *s, *p;
264
Christian Couder59556542013-11-30 20:55:40[diff] [blame]265 if (starts_with(buffer, "URL:")) {
Daniel Barkalow5751f492007-05-12 15:45:53[diff] [blame]266 value_list = 0;
267 s = buffer + 4;
Christian Couder59556542013-11-30 20:55:40[diff] [blame]268 } else if (starts_with(buffer, "Push:")) {
Daniel Barkalow5751f492007-05-12 15:45:53[diff] [blame]269 value_list = 1;
270 s = buffer + 5;
Christian Couder59556542013-11-30 20:55:40[diff] [blame]271 } else if (starts_with(buffer, "Pull:")) {
Daniel Barkalow5d46c9d2007-05-12 15:46:03[diff] [blame]272 value_list = 2;
273 s = buffer + 5;
Daniel Barkalow5751f492007-05-12 15:45:53[diff] [blame]274 } else
275 continue;
276
277 while (isspace(*s))
278 s++;
279 if (!*s)
280 continue;
281
282 p = s + strlen(s);
283 while (isspace(p[-1]))
284 *--p = 0;
285
286 switch (value_list) {
287 case 0:
Daniel Barkalow55029ae2008-02-20 18:43:53[diff] [blame]288 add_url_alias(remote, xstrdup(s));
Daniel Barkalow5751f492007-05-12 15:45:53[diff] [blame]289 break;
290 case 1:
291 add_push_refspec(remote, xstrdup(s));
292 break;
Daniel Barkalow5d46c9d2007-05-12 15:46:03[diff] [blame]293 case 2:
294 add_fetch_refspec(remote, xstrdup(s));
295 break;
Daniel Barkalow5751f492007-05-12 15:45:53[diff] [blame]296 }
297 }
298 fclose(f);
299}
300
301static void read_branches_file(struct remote *remote)
302{
Daniel Barkalowcf818342007-09-11 03:02:56[diff] [blame]303 char *frag;
Brandon Caseyf285a2d2008-10-09 19:12:12[diff] [blame]304 struct strbuf branch = STRBUF_INIT;
Ramkumar Ramachandra55cfde22013-06-22 07:58:12[diff] [blame]305 int n = 1000;
Daniel Barkalow5751f492007-05-12 15:45:53[diff] [blame]306 FILE *f = fopen(git_path("branches/%.*s", n, remote->name), "r");
307 char *s, *p;
308 int len;
309
310 if (!f)
311 return;
312 s = fgets(buffer, BUF_SIZE, f);
313 fclose(f);
314 if (!s)
315 return;
316 while (isspace(*s))
317 s++;
318 if (!*s)
319 return;
Miklos Vajna89cf4c72008-11-10 20:43:00[diff] [blame]320 remote->origin = REMOTE_BRANCHES;
Daniel Barkalow5751f492007-05-12 15:45:53[diff] [blame]321 p = s + strlen(s);
322 while (isspace(p[-1]))
323 *--p = 0;
324 len = p - s;
Daniel Barkalow5751f492007-05-12 15:45:53[diff] [blame]325 p = xmalloc(len + 1);
326 strcpy(p, s);
Daniel Barkalow472fa4c2008-03-25 23:35:28[diff] [blame]327
328 /*
Ramkumar Ramachandra55cfde22013-06-22 07:58:12[diff] [blame]329 * The branches file would have URL and optionally
Daniel Barkalow472fa4c2008-03-25 23:35:28[diff] [blame]330 * #branch specified. The "master" (or specified) branch is
331 * fetched and stored in the local branch of the same name.
332 */
Daniel Barkalowcf818342007-09-11 03:02:56[diff] [blame]333 frag = strchr(p, '#');
334 if (frag) {
335 *(frag++) = '\0';
Daniel Barkalow472fa4c2008-03-25 23:35:28[diff] [blame]336 strbuf_addf(&branch, "refs/heads/%s", frag);
337 } else
338 strbuf_addstr(&branch, "refs/heads/master");
Ramkumar Ramachandra55cfde22013-06-22 07:58:12[diff] [blame]339
340 strbuf_addf(&branch, ":refs/heads/%s", remote->name);
Daniel Barkalow55029ae2008-02-20 18:43:53[diff] [blame]341 add_url_alias(remote, p);
Linus Torvalds2af202b2009-06-18 17:28:43[diff] [blame]342 add_fetch_refspec(remote, strbuf_detach(&branch, NULL));
Martin Koegler18afe102008-11-10 21:47:11[diff] [blame]343 /*
344 * Cogito compatible push: push current HEAD to remote #branch
345 * (master if missing)
346 */
347 strbuf_init(&branch, 0);
348 strbuf_addstr(&branch, "HEAD");
349 if (frag)
350 strbuf_addf(&branch, ":refs/heads/%s", frag);
351 else
352 strbuf_addstr(&branch, ":refs/heads/master");
Linus Torvalds2af202b2009-06-18 17:28:43[diff] [blame]353 add_push_refspec(remote, strbuf_detach(&branch, NULL));
Daniel Barkalowd71ab172007-09-11 03:03:08[diff] [blame]354 remote->fetch_tags = 1; /* always auto-follow */
Daniel Barkalow5751f492007-05-12 15:45:53[diff] [blame]355}
356
Johannes Schindelinef90d6d2008-05-14 17:46:53[diff] [blame]357static int handle_config(const char *key, const char *value, void *cb)
Daniel Barkalow5751f492007-05-12 15:45:53[diff] [blame]358{
359 const char *name;
360 const char *subkey;
361 struct remote *remote;
Daniel Barkalowcf818342007-09-11 03:02:56[diff] [blame]362 struct branch *branch;
Christian Couder59556542013-11-30 20:55:40[diff] [blame]363 if (starts_with(key, "branch.")) {
Daniel Barkalowcf818342007-09-11 03:02:56[diff] [blame]364 name = key + 7;
365 subkey = strrchr(name, '.');
Daniel Barkalowcf818342007-09-11 03:02:56[diff] [blame]366 if (!subkey)
367 return 0;
Junio C Hamano896c0532007-12-15 04:34:56[diff] [blame]368 branch = make_branch(name, subkey - name);
Daniel Barkalowcf818342007-09-11 03:02:56[diff] [blame]369 if (!strcmp(subkey, ".remote")) {
Ramkumar Ramachandrab4b63432013-04-02 07:40:29[diff] [blame]370 if (git_config_string(&branch->remote_name, key, value))
371 return -1;
Daniel Barkalowfa685bd2009-03-11 05:47:20[diff] [blame]372 if (branch == current_branch) {
Daniel Barkalowcf818342007-09-11 03:02:56[diff] [blame]373 default_remote_name = branch->remote_name;
Daniel Barkalowfa685bd2009-03-11 05:47:20[diff] [blame]374 explicit_default_remote_name = 1;
375 }
Ramkumar Ramachandra9f765ce2013-04-02 07:40:34[diff] [blame]376 } else if (!strcmp(subkey, ".pushremote")) {
377 if (branch == current_branch)
Jeff King98b406f2014-02-24 08:59:03[diff] [blame]378 if (git_config_string(&branch_pushremote_name, key, value))
Ramkumar Ramachandra9f765ce2013-04-02 07:40:34[diff] [blame]379 return -1;
Junio C Hamanod2370cc2008-02-11 19:00:10[diff] [blame]380 } else if (!strcmp(subkey, ".merge")) {
381 if (!value)
382 return config_error_nonbool(key);
Daniel Barkalowcf818342007-09-11 03:02:56[diff] [blame]383 add_merge(branch, xstrdup(value));
Junio C Hamanod2370cc2008-02-11 19:00:10[diff] [blame]384 }
Daniel Barkalowcf818342007-09-11 03:02:56[diff] [blame]385 return 0;
Daniel Barkalow5751f492007-05-12 15:45:53[diff] [blame]386 }
Christian Couder59556542013-11-30 20:55:40[diff] [blame]387 if (starts_with(key, "url.")) {
Daniel Barkalow55029ae2008-02-20 18:43:53[diff] [blame]388 struct rewrite *rewrite;
Daniel Barkalow60e3aba2008-04-12 19:32:00[diff] [blame]389 name = key + 4;
Daniel Barkalow55029ae2008-02-20 18:43:53[diff] [blame]390 subkey = strrchr(name, '.');
391 if (!subkey)
392 return 0;
Daniel Barkalow55029ae2008-02-20 18:43:53[diff] [blame]393 if (!strcmp(subkey, ".insteadof")) {
Josh Triplett1c2eafb2009-09-07 08:56:33[diff] [blame]394 rewrite = make_rewrite(&rewrites, name, subkey - name);
395 if (!value)
396 return config_error_nonbool(key);
397 add_instead_of(rewrite, xstrdup(value));
398 } else if (!strcmp(subkey, ".pushinsteadof")) {
399 rewrite = make_rewrite(&rewrites_push, name, subkey - name);
Daniel Barkalow55029ae2008-02-20 18:43:53[diff] [blame]400 if (!value)
401 return config_error_nonbool(key);
402 add_instead_of(rewrite, xstrdup(value));
403 }
404 }
Ramkumar Ramachandra224c2172013-04-02 07:40:33[diff] [blame]405
Christian Couder59556542013-11-30 20:55:40[diff] [blame]406 if (!starts_with(key, "remote."))
Daniel Barkalow5751f492007-05-12 15:45:53[diff] [blame]407 return 0;
408 name = key + 7;
Ramkumar Ramachandra224c2172013-04-02 07:40:33[diff] [blame]409
410 /* Handle remote.* variables */
411 if (!strcmp(name, "pushdefault"))
412 return git_config_string(&pushremote_name, key, value);
413
414 /* Handle remote.<name>.* variables */
Brandon Caseyc82efaf2008-10-14 20:30:21[diff] [blame]415 if (*name == '/') {
416 warning("Config remote shorthand cannot begin with '/': %s",
417 name);
418 return 0;
419 }
Daniel Barkalow5751f492007-05-12 15:45:53[diff] [blame]420 subkey = strrchr(name, '.');
421 if (!subkey)
Johannes Sixtcd294bc2009-04-23 13:49:05[diff] [blame]422 return 0;
Daniel Barkalow5751f492007-05-12 15:45:53[diff] [blame]423 remote = make_remote(name, subkey - name);
Miklos Vajna89cf4c72008-11-10 20:43:00[diff] [blame]424 remote->origin = REMOTE_CONFIG;
Paolo Bonzini84bb2df2008-04-17 11:17:20[diff] [blame]425 if (!strcmp(subkey, ".mirror"))
426 remote->mirror = git_config_bool(key, value);
427 else if (!strcmp(subkey, ".skipdefaultupdate"))
428 remote->skip_default_update = git_config_bool(key, value);
Björn Gustavsson7cc91a22009-11-09 20:11:06[diff] [blame]429 else if (!strcmp(subkey, ".skipfetchall"))
430 remote->skip_default_update = git_config_bool(key, value);
Michael Schubert737c5a92013-07-13 09:36:24[diff] [blame]431 else if (!strcmp(subkey, ".prune"))
432 remote->prune = git_config_bool(key, value);
Paolo Bonzini84bb2df2008-04-17 11:17:20[diff] [blame]433 else if (!strcmp(subkey, ".url")) {
434 const char *v;
435 if (git_config_string(&v, key, value))
436 return -1;
437 add_url(remote, v);
Michael J Gruber20346232009-06-09 16:01:34[diff] [blame]438 } else if (!strcmp(subkey, ".pushurl")) {
439 const char *v;
440 if (git_config_string(&v, key, value))
441 return -1;
442 add_pushurl(remote, v);
Daniel Barkalow5751f492007-05-12 15:45:53[diff] [blame]443 } else if (!strcmp(subkey, ".push")) {
Paolo Bonzini84bb2df2008-04-17 11:17:20[diff] [blame]444 const char *v;
445 if (git_config_string(&v, key, value))
446 return -1;
447 add_push_refspec(remote, v);
Daniel Barkalow5d46c9d2007-05-12 15:46:03[diff] [blame]448 } else if (!strcmp(subkey, ".fetch")) {
Paolo Bonzini84bb2df2008-04-17 11:17:20[diff] [blame]449 const char *v;
450 if (git_config_string(&v, key, value))
451 return -1;
452 add_fetch_refspec(remote, v);
Daniel Barkalow5751f492007-05-12 15:45:53[diff] [blame]453 } else if (!strcmp(subkey, ".receivepack")) {
Paolo Bonzini84bb2df2008-04-17 11:17:20[diff] [blame]454 const char *v;
455 if (git_config_string(&v, key, value))
456 return -1;
Daniel Barkalow5751f492007-05-12 15:45:53[diff] [blame]457 if (!remote->receivepack)
Paolo Bonzini84bb2df2008-04-17 11:17:20[diff] [blame]458 remote->receivepack = v;
Daniel Barkalow5751f492007-05-12 15:45:53[diff] [blame]459 else
460 error("more than one receivepack given, using the first");
Daniel Barkalow0012ba22007-09-11 03:02:51[diff] [blame]461 } else if (!strcmp(subkey, ".uploadpack")) {
Paolo Bonzini84bb2df2008-04-17 11:17:20[diff] [blame]462 const char *v;
463 if (git_config_string(&v, key, value))
464 return -1;
Daniel Barkalow0012ba22007-09-11 03:02:51[diff] [blame]465 if (!remote->uploadpack)
Paolo Bonzini84bb2df2008-04-17 11:17:20[diff] [blame]466 remote->uploadpack = v;
Daniel Barkalow0012ba22007-09-11 03:02:51[diff] [blame]467 else
468 error("more than one uploadpack given, using the first");
Daniel Barkalowd71ab172007-09-11 03:03:08[diff] [blame]469 } else if (!strcmp(subkey, ".tagopt")) {
470 if (!strcmp(value, "--no-tags"))
471 remote->fetch_tags = -1;
Samuel Tardieu944163a2010-04-19 23:31:25[diff] [blame]472 else if (!strcmp(value, "--tags"))
473 remote->fetch_tags = 2;
Sam Vilain14c98212007-12-03 21:48:54[diff] [blame]474 } else if (!strcmp(subkey, ".proxy")) {
Paolo Bonzini84bb2df2008-04-17 11:17:20[diff] [blame]475 return git_config_string((const char **)&remote->http_proxy,
476 key, value);
Daniel Barkalowc578f512009-11-18 01:42:25[diff] [blame]477 } else if (!strcmp(subkey, ".vcs")) {
478 return git_config_string(&remote->foreign_vcs, key, value);
Paolo Bonzini84bb2df2008-04-17 11:17:20[diff] [blame]479 }
Daniel Barkalow5751f492007-05-12 15:45:53[diff] [blame]480 return 0;
481}
482
Daniel Barkalow55029ae2008-02-20 18:43:53[diff] [blame]483static void alias_all_urls(void)
484{
485 int i, j;
486 for (i = 0; i < remotes_nr; i++) {
Josh Triplett1c2eafb2009-09-07 08:56:33[diff] [blame]487 int add_pushurl_aliases;
Daniel Barkalow55029ae2008-02-20 18:43:53[diff] [blame]488 if (!remotes[i])
489 continue;
Michael J Gruber20346232009-06-09 16:01:34[diff] [blame]490 for (j = 0; j < remotes[i]->pushurl_nr; j++) {
Josh Triplettd071d942009-09-07 08:56:00[diff] [blame]491 remotes[i]->pushurl[j] = alias_url(remotes[i]->pushurl[j], &rewrites);
Michael J Gruber20346232009-06-09 16:01:34[diff] [blame]492 }
Josh Triplett1c2eafb2009-09-07 08:56:33[diff] [blame]493 add_pushurl_aliases = remotes[i]->pushurl_nr == 0;
494 for (j = 0; j < remotes[i]->url_nr; j++) {
495 if (add_pushurl_aliases)
496 add_pushurl_alias(remotes[i], remotes[i]->url[j]);
497 remotes[i]->url[j] = alias_url(remotes[i]->url[j], &rewrites);
498 }
Daniel Barkalow55029ae2008-02-20 18:43:53[diff] [blame]499 }
500}
501
Daniel Barkalow5751f492007-05-12 15:45:53[diff] [blame]502static void read_config(void)
503{
504 unsigned char sha1[20];
505 const char *head_ref;
506 int flag;
Tor Arntsen2543d9b2010-06-04 09:32:11[diff] [blame]507 if (default_remote_name) /* did this already */
Daniel Barkalow5751f492007-05-12 15:45:53[diff] [blame]508 return;
Jeff King11a6ba12013-09-24 05:19:08[diff] [blame]509 default_remote_name = "origin";
Daniel Barkalow5751f492007-05-12 15:45:53[diff] [blame]510 current_branch = NULL;
Ronnie Sahlberg7695d112014-07-15 19:59:36[diff] [blame]511 head_ref = resolve_ref_unsafe("HEAD", 0, sha1, &flag);
Daniel Barkalow5751f492007-05-12 15:45:53[diff] [blame]512 if (head_ref && (flag & REF_ISSYMREF) &&
Jeff King95b567c2014-06-18 19:48:29[diff] [blame]513 skip_prefix(head_ref, "refs/heads/", &head_ref)) {
514 current_branch = make_branch(head_ref, 0);
Daniel Barkalow5751f492007-05-12 15:45:53[diff] [blame]515 }
Johannes Schindelinef90d6d2008-05-14 17:46:53[diff] [blame]516 git_config(handle_config, NULL);
Jeff King98b406f2014-02-24 08:59:03[diff] [blame]517 if (branch_pushremote_name) {
518 free((char *)pushremote_name);
519 pushremote_name = branch_pushremote_name;
520 }
Daniel Barkalow55029ae2008-02-20 18:43:53[diff] [blame]521 alias_all_urls();
Daniel Barkalow5751f492007-05-12 15:45:53[diff] [blame]522}
523
Junio C Hamano47c6ef12008-07-27 06:15:51[diff] [blame]524/*
Brandon Casey2cb1f362008-08-22 00:16:30[diff] [blame]525 * This function frees a refspec array.
526 * Warning: code paths should be checked to ensure that the src
527 * and dst pointers are always freeable pointers as well
528 * as the refspec pointer itself.
529 */
Nanako Shiraishi697d7f52008-09-25 09:41:00[diff] [blame]530static void free_refspecs(struct refspec *refspec, int nr_refspec)
Brandon Casey2cb1f362008-08-22 00:16:30[diff] [blame]531{
532 int i;
533
534 if (!refspec)
535 return;
536
537 for (i = 0; i < nr_refspec; i++) {
538 free(refspec[i].src);
539 free(refspec[i].dst);
540 }
541 free(refspec);
542}
543
Jonas Fonseca24b61772008-04-13 09:56:54[diff] [blame]544static struct refspec *parse_refspec_internal(int nr_refspec, const char **refspec, int fetch, int verify)
Daniel Barkalow6b628162007-05-12 15:45:59[diff] [blame]545{
546 int i;
Brian Gesiakda7a4782014-05-26 15:33:55[diff] [blame]547 struct refspec *rs = xcalloc(nr_refspec, sizeof(*rs));
Junio C Hamano46220ca2008-03-21 06:34:37[diff] [blame]548
Daniel Barkalow6b628162007-05-12 15:45:59[diff] [blame]549 for (i = 0; i < nr_refspec; i++) {
Junio C Hamano47c6ef12008-07-27 06:15:51[diff] [blame]550 size_t llen;
Junio C Hamano46220ca2008-03-21 06:34:37[diff] [blame]551 int is_glob;
552 const char *lhs, *rhs;
Michael Haggerty8d9c5012011-09-15 21:10:25[diff] [blame]553 int flags;
Junio C Hamano46220ca2008-03-21 06:34:37[diff] [blame]554
Benjamin Kramer8e76bf32009-03-13 12:51:33[diff] [blame]555 is_glob = 0;
Junio C Hamano46220ca2008-03-21 06:34:37[diff] [blame]556
557 lhs = refspec[i];
558 if (*lhs == '+') {
Daniel Barkalow6b628162007-05-12 15:45:59[diff] [blame]559 rs[i].force = 1;
Junio C Hamano46220ca2008-03-21 06:34:37[diff] [blame]560 lhs++;
Daniel Barkalow6b628162007-05-12 15:45:59[diff] [blame]561 }
Junio C Hamano46220ca2008-03-21 06:34:37[diff] [blame]562
563 rhs = strrchr(lhs, ':');
Paolo Bonzinia83619d2008-04-28 15:32:12[diff] [blame]564
565 /*
566 * Before going on, special case ":" (or "+:") as a refspec
Junio C Hamanodef24992013-01-29 20:58:50[diff] [blame]567 * for pushing matching refs.
Paolo Bonzinia83619d2008-04-28 15:32:12[diff] [blame]568 */
569 if (!fetch && rhs == lhs && rhs[1] == '\0') {
570 rs[i].matching = 1;
571 continue;
572 }
573
Junio C Hamano46220ca2008-03-21 06:34:37[diff] [blame]574 if (rhs) {
Junio C Hamano47c6ef12008-07-27 06:15:51[diff] [blame]575 size_t rlen = strlen(++rhs);
Daniel Barkalowabd2bde2009-03-07 06:11:39[diff] [blame]576 is_glob = (1 <= rlen && strchr(rhs, '*'));
Daniel Barkalow08fbdb32009-03-07 06:11:36[diff] [blame]577 rs[i].dst = xstrndup(rhs, rlen);
Junio C Hamano46220ca2008-03-21 06:34:37[diff] [blame]578 }
579
580 llen = (rhs ? (rhs - lhs - 1) : strlen(lhs));
Daniel Barkalowabd2bde2009-03-07 06:11:39[diff] [blame]581 if (1 <= llen && memchr(lhs, '*', llen)) {
Junio C Hamano7d19da42008-03-26 04:15:52[diff] [blame]582 if ((rhs && !is_glob) || (!rhs && fetch))
583 goto invalid;
584 is_glob = 1;
Junio C Hamano7d19da42008-03-26 04:15:52[diff] [blame]585 } else if (rhs && is_glob) {
586 goto invalid;
Junio C Hamano46220ca2008-03-21 06:34:37[diff] [blame]587 }
Junio C Hamano7d19da42008-03-26 04:15:52[diff] [blame]588
Junio C Hamano46220ca2008-03-21 06:34:37[diff] [blame]589 rs[i].pattern = is_glob;
590 rs[i].src = xstrndup(lhs, llen);
Michael Haggerty8d9c5012011-09-15 21:10:25[diff] [blame]591 flags = REFNAME_ALLOW_ONELEVEL | (is_glob ? REFNAME_REFSPEC_PATTERN : 0);
Junio C Hamano46220ca2008-03-21 06:34:37[diff] [blame]592
593 if (fetch) {
Junio C Hamano6e7b66e2013-01-29 22:02:15[diff] [blame]594 unsigned char unused[40];
595
Junio C Hamanodef24992013-01-29 20:58:50[diff] [blame]596 /* LHS */
Junio C Hamano46220ca2008-03-21 06:34:37[diff] [blame]597 if (!*rs[i].src)
Junio C Hamanodef24992013-01-29 20:58:50[diff] [blame]598 ; /* empty is ok; it means "HEAD" */
Junio C Hamano6e7b66e2013-01-29 22:02:15[diff] [blame]599 else if (llen == 40 && !get_sha1_hex(rs[i].src, unused))
600 rs[i].exact_sha1 = 1; /* ok */
Junio C Hamanodef24992013-01-29 20:58:50[diff] [blame]601 else if (!check_refname_format(rs[i].src, flags))
602 ; /* valid looking ref is ok */
603 else
Michael Haggerty8d9c5012011-09-15 21:10:25[diff] [blame]604 goto invalid;
Junio C Hamanodef24992013-01-29 20:58:50[diff] [blame]605 /* RHS */
Michael Haggerty8d9c5012011-09-15 21:10:25[diff] [blame]606 if (!rs[i].dst)
Junio C Hamanodef24992013-01-29 20:58:50[diff] [blame]607 ; /* missing is ok; it is the same as empty */
Michael Haggerty8d9c5012011-09-15 21:10:25[diff] [blame]608 else if (!*rs[i].dst)
Junio C Hamanodef24992013-01-29 20:58:50[diff] [blame]609 ; /* empty is ok; it means "do not store" */
610 else if (!check_refname_format(rs[i].dst, flags))
611 ; /* valid looking ref is ok */
612 else
Michael Haggerty8d9c5012011-09-15 21:10:25[diff] [blame]613 goto invalid;
Daniel Barkalow6b628162007-05-12 15:45:59[diff] [blame]614 } else {
Junio C Hamano46220ca2008-03-21 06:34:37[diff] [blame]615 /*
616 * LHS
617 * - empty is allowed; it means delete.
618 * - when wildcarded, it must be a valid looking ref.
619 * - otherwise, it must be an extended SHA-1, but
620 * there is no existing way to validate this.
621 */
622 if (!*rs[i].src)
623 ; /* empty is ok */
624 else if (is_glob) {
Michael Haggerty8d9c5012011-09-15 21:10:25[diff] [blame]625 if (check_refname_format(rs[i].src, flags))
Junio C Hamano46220ca2008-03-21 06:34:37[diff] [blame]626 goto invalid;
627 }
628 else
629 ; /* anything goes, for now */
630 /*
631 * RHS
632 * - missing is allowed, but LHS then must be a
633 * valid looking ref.
634 * - empty is not allowed.
635 * - otherwise it must be a valid looking ref.
636 */
637 if (!rs[i].dst) {
Michael Haggerty8d9c5012011-09-15 21:10:25[diff] [blame]638 if (check_refname_format(rs[i].src, flags))
Junio C Hamano46220ca2008-03-21 06:34:37[diff] [blame]639 goto invalid;
640 } else if (!*rs[i].dst) {
641 goto invalid;
642 } else {
Michael Haggerty8d9c5012011-09-15 21:10:25[diff] [blame]643 if (check_refname_format(rs[i].dst, flags))
Junio C Hamano46220ca2008-03-21 06:34:37[diff] [blame]644 goto invalid;
645 }
Daniel Barkalowef00d152008-03-18 02:05:23[diff] [blame]646 }
Daniel Barkalow6b628162007-05-12 15:45:59[diff] [blame]647 }
648 return rs;
Junio C Hamano46220ca2008-03-21 06:34:37[diff] [blame]649
650 invalid:
Jonas Fonseca24b61772008-04-13 09:56:54[diff] [blame]651 if (verify) {
Brandon Casey2cb1f362008-08-22 00:16:30[diff] [blame]652 /*
653 * nr_refspec must be greater than zero and i must be valid
654 * since it is only possible to reach this point from within
655 * the for loop above.
656 */
657 free_refspecs(rs, i+1);
Jonas Fonseca24b61772008-04-13 09:56:54[diff] [blame]658 return NULL;
659 }
Junio C Hamano46220ca2008-03-21 06:34:37[diff] [blame]660 die("Invalid refspec '%s'", refspec[i]);
661}
662
Jonas Fonseca24b61772008-04-13 09:56:54[diff] [blame]663int valid_fetch_refspec(const char *fetch_refspec_str)
664{
Jonas Fonseca24b61772008-04-13 09:56:54[diff] [blame]665 struct refspec *refspec;
666
Gary V. Vaughan66dbfd52010-05-14 09:31:33[diff] [blame]667 refspec = parse_refspec_internal(1, &fetch_refspec_str, 1, 1);
Brandon Casey2cb1f362008-08-22 00:16:30[diff] [blame]668 free_refspecs(refspec, 1);
Jonas Fonseca24b61772008-04-13 09:56:54[diff] [blame]669 return !!refspec;
670}
671
Junio C Hamano46220ca2008-03-21 06:34:37[diff] [blame]672struct refspec *parse_fetch_refspec(int nr_refspec, const char **refspec)
673{
Jonas Fonseca24b61772008-04-13 09:56:54[diff] [blame]674 return parse_refspec_internal(nr_refspec, refspec, 1, 0);
Junio C Hamano46220ca2008-03-21 06:34:37[diff] [blame]675}
676
Nanako Shiraishi697d7f52008-09-25 09:41:00[diff] [blame]677static struct refspec *parse_push_refspec(int nr_refspec, const char **refspec)
Junio C Hamano46220ca2008-03-21 06:34:37[diff] [blame]678{
Jonas Fonseca24b61772008-04-13 09:56:54[diff] [blame]679 return parse_refspec_internal(nr_refspec, refspec, 0, 0);
Daniel Barkalow6b628162007-05-12 15:45:59[diff] [blame]680}
681
Daniel Barkalow72ff8942009-11-18 01:42:28[diff] [blame]682void free_refspec(int nr_refspec, struct refspec *refspec)
683{
684 int i;
685 for (i = 0; i < nr_refspec; i++) {
686 free(refspec[i].src);
687 free(refspec[i].dst);
688 }
689 free(refspec);
690}
691
Daniel Barkalowdf93e332008-02-15 19:14:18[diff] [blame]692static int valid_remote_nick(const char *name)
693{
Alexander Potashev8ca12c02009-01-10 12:07:50[diff] [blame]694 if (!name[0] || is_dot_or_dotdot(name))
Daniel Barkalowdf93e332008-02-15 19:14:18[diff] [blame]695 return 0;
696 return !strchr(name, '/'); /* no slash */
697}
698
Ramkumar Ramachandraf24f7152013-04-02 07:40:32[diff] [blame]699static struct remote *remote_get_1(const char *name, const char *pushremote_name)
Daniel Barkalow5751f492007-05-12 15:45:53[diff] [blame]700{
701 struct remote *ret;
Daniel Barkalowfa685bd2009-03-11 05:47:20[diff] [blame]702 int name_given = 0;
Daniel Barkalow5751f492007-05-12 15:45:53[diff] [blame]703
Daniel Barkalowfa685bd2009-03-11 05:47:20[diff] [blame]704 if (name)
705 name_given = 1;
706 else {
Ramkumar Ramachandraf24f7152013-04-02 07:40:32[diff] [blame]707 if (pushremote_name) {
708 name = pushremote_name;
709 name_given = 1;
710 } else {
711 name = default_remote_name;
712 name_given = explicit_default_remote_name;
713 }
Daniel Barkalowfa685bd2009-03-11 05:47:20[diff] [blame]714 }
Junio C Hamano9326d492009-03-16 07:35:09[diff] [blame]715
Daniel Barkalow5751f492007-05-12 15:45:53[diff] [blame]716 ret = make_remote(name, 0);
Daniel Barkalowdf93e332008-02-15 19:14:18[diff] [blame]717 if (valid_remote_nick(name)) {
Daniel Barkalow0a4da292009-11-18 01:42:23[diff] [blame]718 if (!valid_remote(ret))
Daniel Barkalow5751f492007-05-12 15:45:53[diff] [blame]719 read_remotes_file(ret);
Daniel Barkalow0a4da292009-11-18 01:42:23[diff] [blame]720 if (!valid_remote(ret))
Daniel Barkalow5751f492007-05-12 15:45:53[diff] [blame]721 read_branches_file(ret);
722 }
Daniel Barkalow0a4da292009-11-18 01:42:23[diff] [blame]723 if (name_given && !valid_remote(ret))
Daniel Barkalow55029ae2008-02-20 18:43:53[diff] [blame]724 add_url_alias(ret, name);
Daniel Barkalow0a4da292009-11-18 01:42:23[diff] [blame]725 if (!valid_remote(ret))
Daniel Barkalow5751f492007-05-12 15:45:53[diff] [blame]726 return NULL;
Junio C Hamano46220ca2008-03-21 06:34:37[diff] [blame]727 ret->fetch = parse_fetch_refspec(ret->fetch_refspec_nr, ret->fetch_refspec);
728 ret->push = parse_push_refspec(ret->push_refspec_nr, ret->push_refspec);
Daniel Barkalow5751f492007-05-12 15:45:53[diff] [blame]729 return ret;
730}
Daniel Barkalow6b628162007-05-12 15:45:59[diff] [blame]731
Ramkumar Ramachandraf24f7152013-04-02 07:40:32[diff] [blame]732struct remote *remote_get(const char *name)
733{
734 read_config();
735 return remote_get_1(name, NULL);
736}
737
738struct remote *pushremote_get(const char *name)
739{
740 read_config();
741 return remote_get_1(name, pushremote_name);
742}
743
Finn Arne Gangstad9a23ba32009-04-06 13:41:01[diff] [blame]744int remote_is_configured(const char *name)
745{
Patrick Reynoldsd0da0032014-07-29 14:43:39[diff] [blame]746 struct remotes_hash_key lookup;
747 struct hashmap_entry lookup_entry;
Finn Arne Gangstad9a23ba32009-04-06 13:41:01[diff] [blame]748 read_config();
749
Patrick Reynoldsd0da0032014-07-29 14:43:39[diff] [blame]750 init_remotes_hash();
751 lookup.str = name;
752 lookup.len = strlen(name);
753 hashmap_entry_init(&lookup_entry, memhash(name, lookup.len));
754
755 return hashmap_get(&remotes_hash, &lookup_entry, &lookup) != NULL;
Finn Arne Gangstad9a23ba32009-04-06 13:41:01[diff] [blame]756}
757
Johannes Schindelinb42f6922007-07-10 17:48:40[diff] [blame]758int for_each_remote(each_remote_fn fn, void *priv)
759{
760 int i, result = 0;
761 read_config();
Daniel Barkalow2d313472008-02-19 04:41:41[diff] [blame]762 for (i = 0; i < remotes_nr && !result; i++) {
Johannes Schindelinb42f6922007-07-10 17:48:40[diff] [blame]763 struct remote *r = remotes[i];
764 if (!r)
765 continue;
766 if (!r->fetch)
Junio C Hamano46220ca2008-03-21 06:34:37[diff] [blame]767 r->fetch = parse_fetch_refspec(r->fetch_refspec_nr,
768 r->fetch_refspec);
Johannes Schindelinb42f6922007-07-10 17:48:40[diff] [blame]769 if (!r->push)
Junio C Hamano46220ca2008-03-21 06:34:37[diff] [blame]770 r->push = parse_push_refspec(r->push_refspec_nr,
771 r->push_refspec);
Johannes Schindelinb42f6922007-07-10 17:48:40[diff] [blame]772 result = fn(r, priv);
773 }
774 return result;
775}
776
Michael Haggertydf02ebd2013-10-30 05:33:10[diff] [blame]777static void handle_duplicate(struct ref *ref1, struct ref *ref2)
778{
Michael Haggertyf096e6e2013-10-30 05:33:12[diff] [blame]779 if (strcmp(ref1->name, ref2->name)) {
780 if (ref1->fetch_head_status != FETCH_HEAD_IGNORE &&
781 ref2->fetch_head_status != FETCH_HEAD_IGNORE) {
782 die(_("Cannot fetch both %s and %s to %s"),
783 ref1->name, ref2->name, ref2->peer_ref->name);
784 } else if (ref1->fetch_head_status != FETCH_HEAD_IGNORE &&
785 ref2->fetch_head_status == FETCH_HEAD_IGNORE) {
786 warning(_("%s usually tracks %s, not %s"),
787 ref2->peer_ref->name, ref2->name, ref1->name);
788 } else if (ref1->fetch_head_status == FETCH_HEAD_IGNORE &&
789 ref2->fetch_head_status == FETCH_HEAD_IGNORE) {
790 die(_("%s tracks both %s and %s"),
791 ref2->peer_ref->name, ref1->name, ref2->name);
792 } else {
793 /*
794 * This last possibility doesn't occur because
795 * FETCH_HEAD_IGNORE entries always appear at
796 * the end of the list.
797 */
798 die(_("Internal error"));
799 }
800 }
Michael Haggertydf02ebd2013-10-30 05:33:10[diff] [blame]801 free(ref2->peer_ref);
802 free(ref2);
803}
804
Michael Haggertyb9afe662013-10-30 05:33:09[diff] [blame]805struct ref *ref_remove_duplicates(struct ref *ref_map)
Daniel Barkalow2467a4f2007-10-08 04:25:07[diff] [blame]806{
Thiago Farina183113a2010-07-04 19:46:19[diff] [blame]807 struct string_list refs = STRING_LIST_INIT_NODUP;
Michael Haggertyb9afe662013-10-30 05:33:09[diff] [blame]808 struct ref *retval = NULL;
809 struct ref **p = &retval;
Julian Phillips73cf0822009-10-25 21:28:11[diff] [blame]810
Michael Haggertyb9afe662013-10-30 05:33:09[diff] [blame]811 while (ref_map) {
812 struct ref *ref = ref_map;
Julian Phillips73cf0822009-10-25 21:28:11[diff] [blame]813
Michael Haggertyb9afe662013-10-30 05:33:09[diff] [blame]814 ref_map = ref_map->next;
815 ref->next = NULL;
816
817 if (!ref->peer_ref) {
818 *p = ref;
819 p = &ref->next;
Michael Haggerty09ea1f82013-10-30 05:33:07[diff] [blame]820 } else {
Michael Haggertyb9afe662013-10-30 05:33:09[diff] [blame]821 struct string_list_item *item =
822 string_list_insert(&refs, ref->peer_ref->name);
823
824 if (item->util) {
825 /* Entry already existed */
Michael Haggertydf02ebd2013-10-30 05:33:10[diff] [blame]826 handle_duplicate((struct ref *)item->util, ref);
Michael Haggertyb9afe662013-10-30 05:33:09[diff] [blame]827 } else {
828 *p = ref;
829 p = &ref->next;
830 item->util = ref;
831 }
Daniel Barkalow2467a4f2007-10-08 04:25:07[diff] [blame]832 }
Daniel Barkalow2467a4f2007-10-08 04:25:07[diff] [blame]833 }
Michael Haggertyb9afe662013-10-30 05:33:09[diff] [blame]834
Julian Phillips73cf0822009-10-25 21:28:11[diff] [blame]835 string_list_clear(&refs, 0);
Michael Haggertyb9afe662013-10-30 05:33:09[diff] [blame]836 return retval;
Daniel Barkalow2467a4f2007-10-08 04:25:07[diff] [blame]837}
838
Shawn O. Pearce28b91f82007-09-19 04:49:27[diff] [blame]839int remote_has_url(struct remote *remote, const char *url)
Daniel Barkalow5d46c9d2007-05-12 15:46:03[diff] [blame]840{
841 int i;
Shawn O. Pearce28b91f82007-09-19 04:49:27[diff] [blame]842 for (i = 0; i < remote->url_nr; i++) {
843 if (!strcmp(remote->url[i], url))
Daniel Barkalow5d46c9d2007-05-12 15:46:03[diff] [blame]844 return 1;
845 }
846 return 0;
847}
848
Daniel Barkalowe9282132009-03-07 06:11:34[diff] [blame]849static int match_name_with_pattern(const char *key, const char *name,
850 const char *value, char **result)
Daniel Barkalowa3c84232009-03-07 06:11:29[diff] [blame]851{
Daniel Barkalow08fbdb32009-03-07 06:11:36[diff] [blame]852 const char *kstar = strchr(key, '*');
853 size_t klen;
Daniel Barkalowabd2bde2009-03-07 06:11:39[diff] [blame]854 size_t ksuffixlen;
855 size_t namelen;
Daniel Barkalow08fbdb32009-03-07 06:11:36[diff] [blame]856 int ret;
857 if (!kstar)
858 die("Key '%s' of pattern had no '*'", key);
859 klen = kstar - key;
Daniel Barkalowabd2bde2009-03-07 06:11:39[diff] [blame]860 ksuffixlen = strlen(kstar + 1);
861 namelen = strlen(name);
862 ret = !strncmp(name, key, klen) && namelen >= klen + ksuffixlen &&
863 !memcmp(name + namelen - ksuffixlen, kstar + 1, ksuffixlen);
Daniel Barkalowe9282132009-03-07 06:11:34[diff] [blame]864 if (ret && value) {
René Scharfe07bfa572014-09-21 08:23:37[diff] [blame]865 struct strbuf sb = STRBUF_INIT;
Daniel Barkalow08fbdb32009-03-07 06:11:36[diff] [blame]866 const char *vstar = strchr(value, '*');
Daniel Barkalow08fbdb32009-03-07 06:11:36[diff] [blame]867 if (!vstar)
868 die("Value '%s' of pattern has no '*'", value);
René Scharfe07bfa572014-09-21 08:23:37[diff] [blame]869 strbuf_add(&sb, value, vstar - value);
870 strbuf_add(&sb, name + klen, namelen - klen - ksuffixlen);
871 strbuf_addstr(&sb, vstar + 1);
872 *result = strbuf_detach(&sb, NULL);
Daniel Barkalowe9282132009-03-07 06:11:34[diff] [blame]873 }
Daniel Barkalowa3c84232009-03-07 06:11:29[diff] [blame]874 return ret;
875}
876
Carlos Martín Nietoe6f63712014-02-27 09:00:10[diff] [blame]877static void query_refspecs_multiple(struct refspec *refs, int ref_count, struct refspec *query, struct string_list *results)
878{
879 int i;
880 int find_src = !query->src;
881
882 if (find_src && !query->dst)
883 error("query_refspecs_multiple: need either src or dst");
884
885 for (i = 0; i < ref_count; i++) {
886 struct refspec *refspec = &refs[i];
887 const char *key = find_src ? refspec->dst : refspec->src;
888 const char *value = find_src ? refspec->src : refspec->dst;
889 const char *needle = find_src ? query->dst : query->src;
890 char **result = find_src ? &query->src : &query->dst;
891
892 if (!refspec->dst)
893 continue;
894 if (refspec->pattern) {
895 if (match_name_with_pattern(key, needle, value, result))
896 string_list_append_nodup(results, *result);
897 } else if (!strcmp(needle, key)) {
898 string_list_append(results, value);
899 }
900 }
901}
902
Junio C Hamanoca024652013-12-03 23:41:15[diff] [blame]903int query_refspecs(struct refspec *refs, int ref_count, struct refspec *query)
Daniel Barkalow72ff8942009-11-18 01:42:28[diff] [blame]904{
905 int i;
Carlos Martín Nietoc5003522011-10-15 05:04:24[diff] [blame]906 int find_src = !query->src;
Michael Haggerty049bff82013-10-30 05:33:01[diff] [blame]907 const char *needle = find_src ? query->dst : query->src;
908 char **result = find_src ? &query->src : &query->dst;
Daniel Barkalow72ff8942009-11-18 01:42:28[diff] [blame]909
Carlos Martín Nietoc5003522011-10-15 05:04:24[diff] [blame]910 if (find_src && !query->dst)
911 return error("query_refspecs: need either src or dst");
Johannes Schindelinb42f6922007-07-10 17:48:40[diff] [blame]912
Carlos Martín Nietoc5003522011-10-15 05:04:24[diff] [blame]913 for (i = 0; i < ref_count; i++) {
914 struct refspec *refspec = &refs[i];
915 const char *key = find_src ? refspec->dst : refspec->src;
916 const char *value = find_src ? refspec->src : refspec->dst;
Carlos Martín Nietoc5003522011-10-15 05:04:24[diff] [blame]917
Shawn O. Pearce009c5bc2007-09-25 04:13:14[diff] [blame]918 if (!refspec->dst)
Daniel Barkalow5d46c9d2007-05-12 15:46:03[diff] [blame]919 continue;
Carlos Martín Nietoc5003522011-10-15 05:04:24[diff] [blame]920 if (refspec->pattern) {
Daniel Barkalowe9282132009-03-07 06:11:34[diff] [blame]921 if (match_name_with_pattern(key, needle, value, result)) {
Carlos Martín Nietoc5003522011-10-15 05:04:24[diff] [blame]922 query->force = refspec->force;
Daniel Barkalow5d46c9d2007-05-12 15:46:03[diff] [blame]923 return 0;
924 }
Johannes Schindelinb42f6922007-07-10 17:48:40[diff] [blame]925 } else if (!strcmp(needle, key)) {
926 *result = xstrdup(value);
Carlos Martín Nietoc5003522011-10-15 05:04:24[diff] [blame]927 query->force = refspec->force;
Johannes Schindelinb42f6922007-07-10 17:48:40[diff] [blame]928 return 0;
Daniel Barkalow5d46c9d2007-05-12 15:46:03[diff] [blame]929 }
930 }
Daniel Barkalow5d46c9d2007-05-12 15:46:03[diff] [blame]931 return -1;
932}
933
Carlos Martín Nietoc5003522011-10-15 05:04:24[diff] [blame]934char *apply_refspecs(struct refspec *refspecs, int nr_refspec,
935 const char *name)
936{
937 struct refspec query;
938
939 memset(&query, 0, sizeof(struct refspec));
940 query.src = (char *)name;
941
942 if (query_refspecs(refspecs, nr_refspec, &query))
943 return NULL;
944
945 return query.dst;
946}
947
948int remote_find_tracking(struct remote *remote, struct refspec *refspec)
949{
950 return query_refspecs(remote->fetch, remote->fetch_refspec_nr, refspec);
951}
952
René Scharfe80097682008-10-18 08:37:40[diff] [blame]953static struct ref *alloc_ref_with_prefix(const char *prefix, size_t prefixlen,
954 const char *name)
955{
956 size_t len = strlen(name);
957 struct ref *ref = xcalloc(1, sizeof(struct ref) + prefixlen + len + 1);
958 memcpy(ref->name, prefix, prefixlen);
959 memcpy(ref->name + prefixlen, name, len);
960 return ref;
961}
962
René Scharfe59c69c02008-10-18 08:44:18[diff] [blame]963struct ref *alloc_ref(const char *name)
Daniel Barkalowdfd255d2007-07-10 04:47:23[diff] [blame]964{
René Scharfe59c69c02008-10-18 08:44:18[diff] [blame]965 return alloc_ref_with_prefix("", 0, name);
Krzysztof Kowalczyk737922a2008-05-10 23:26:58[diff] [blame]966}
967
Jeff King59a57752011-06-07 23:03:03[diff] [blame]968struct ref *copy_ref(const struct ref *ref)
Daniel Barkalowd71ab172007-09-11 03:03:08[diff] [blame]969{
Jay Soffian7b3db092009-02-27 19:10:04[diff] [blame]970 struct ref *cpy;
971 size_t len;
972 if (!ref)
973 return NULL;
974 len = strlen(ref->name);
975 cpy = xmalloc(sizeof(struct ref) + len + 1);
976 memcpy(cpy, ref, sizeof(struct ref) + len + 1);
977 cpy->next = NULL;
Jeff King8c53f072015-01-13 01:59:09[diff] [blame]978 cpy->symref = xstrdup_or_null(ref->symref);
979 cpy->remote_status = xstrdup_or_null(ref->remote_status);
Jay Soffian7b3db092009-02-27 19:10:04[diff] [blame]980 cpy->peer_ref = copy_ref(ref->peer_ref);
981 return cpy;
Daniel Barkalowd71ab172007-09-11 03:03:08[diff] [blame]982}
983
Daniel Barkalow45773702007-10-30 01:05:40[diff] [blame]984struct ref *copy_ref_list(const struct ref *ref)
985{
986 struct ref *ret = NULL;
987 struct ref **tail = &ret;
988 while (ref) {
989 *tail = copy_ref(ref);
990 ref = ref->next;
991 tail = &((*tail)->next);
992 }
993 return ret;
994}
995
Nanako Shiraishi697d7f52008-09-25 09:41:00[diff] [blame]996static void free_ref(struct ref *ref)
Daniel Barkalowbe885d92008-04-26 19:53:12[diff] [blame]997{
998 if (!ref)
999 return;
Jay Soffian7b3db092009-02-27 19:10:04[diff] [blame]1000 free_ref(ref->peer_ref);
Daniel Barkalowbe885d92008-04-26 19:53:12[diff] [blame]1001 free(ref->remote_status);
1002 free(ref->symref);
1003 free(ref);
1004}
1005
Daniel Barkalowdfd255d2007-07-10 04:47:23[diff] [blame]1006void free_refs(struct ref *ref)
1007{
1008 struct ref *next;
1009 while (ref) {
1010 next = ref->next;
Daniel Barkalowbe885d92008-04-26 19:53:12[diff] [blame]1011 free_ref(ref);
Daniel Barkalowdfd255d2007-07-10 04:47:23[diff] [blame]1012 ref = next;
1013 }
1014}
1015
Jeff Kinged81c762012-05-21 22:19:28[diff] [blame]1016int ref_compare_name(const void *va, const void *vb)
1017{
1018 const struct ref *a = va, *b = vb;
1019 return strcmp(a->name, b->name);
1020}
1021
1022static void *ref_list_get_next(const void *a)
1023{
1024 return ((const struct ref *)a)->next;
1025}
1026
1027static void ref_list_set_next(void *a, void *next)
1028{
1029 ((struct ref *)a)->next = next;
1030}
1031
1032void sort_ref_list(struct ref **l, int (*cmp)(const void *, const void *))
1033{
1034 *l = llist_mergesort(*l, ref_list_get_next, ref_list_set_next, cmp);
1035}
1036
Junio C Hamanoca024652013-12-03 23:41:15[diff] [blame]1037int count_refspec_match(const char *pattern,
1038 struct ref *refs,
1039 struct ref **matched_ref)
Daniel Barkalow6b628162007-05-12 15:45:59[diff] [blame]1040{
1041 int patlen = strlen(pattern);
1042 struct ref *matched_weak = NULL;
1043 struct ref *matched = NULL;
1044 int weak_match = 0;
1045 int match = 0;
1046
1047 for (weak_match = match = 0; refs; refs = refs->next) {
1048 char *name = refs->name;
1049 int namelen = strlen(name);
Daniel Barkalow6b628162007-05-12 15:45:59[diff] [blame]1050
Michael Haggerty54457fe2014-01-14 03:16:07[diff] [blame]1051 if (!refname_match(pattern, name))
Daniel Barkalow6b628162007-05-12 15:45:59[diff] [blame]1052 continue;
1053
1054 /* A match is "weak" if it is with refs outside
1055 * heads or tags, and did not specify the pattern
1056 * in full (e.g. "refs/remotes/origin/master") or at
1057 * least from the toplevel (e.g. "remotes/origin/master");
1058 * otherwise "git push $URL master" would result in
1059 * ambiguity between remotes/origin/master and heads/master
1060 * at the remote site.
1061 */
1062 if (namelen != patlen &&
1063 patlen != namelen - 5 &&
Christian Couder59556542013-11-30 20:55:40[diff] [blame]1064 !starts_with(name, "refs/heads/") &&
1065 !starts_with(name, "refs/tags/")) {
Daniel Barkalow6b628162007-05-12 15:45:59[diff] [blame]1066 /* We want to catch the case where only weak
1067 * matches are found and there are multiple
1068 * matches, and where more than one strong
1069 * matches are found, as ambiguous. One
1070 * strong match with zero or more weak matches
1071 * are acceptable as a unique match.
1072 */
1073 matched_weak = refs;
1074 weak_match++;
1075 }
1076 else {
1077 matched = refs;
1078 match++;
1079 }
1080 }
1081 if (!matched) {
Jeff King471fd3f2014-03-05 19:03:43[diff] [blame]1082 if (matched_ref)
1083 *matched_ref = matched_weak;
Daniel Barkalow6b628162007-05-12 15:45:59[diff] [blame]1084 return weak_match;
1085 }
1086 else {
Jeff King471fd3f2014-03-05 19:03:43[diff] [blame]1087 if (matched_ref)
1088 *matched_ref = matched;
Daniel Barkalow6b628162007-05-12 15:45:59[diff] [blame]1089 return match;
1090 }
1091}
1092
Daniel Barkalow1d735262007-07-10 04:47:26[diff] [blame]1093static void tail_link_ref(struct ref *ref, struct ref ***tail)
Daniel Barkalow6b628162007-05-12 15:45:59[diff] [blame]1094{
1095 **tail = ref;
Daniel Barkalow1d735262007-07-10 04:47:26[diff] [blame]1096 while (ref->next)
1097 ref = ref->next;
Daniel Barkalow6b628162007-05-12 15:45:59[diff] [blame]1098 *tail = &ref->next;
Daniel Barkalow6b628162007-05-12 15:45:59[diff] [blame]1099}
1100
Felipe Contreras67655242012-02-22 22:43:40[diff] [blame]1101static struct ref *alloc_delete_ref(void)
1102{
1103 struct ref *ref = alloc_ref("(delete)");
1104 hashclr(ref->new_sha1);
1105 return ref;
1106}
1107
Jeff King471fd3f2014-03-05 19:03:43[diff] [blame]1108static int try_explicit_object_name(const char *name,
1109 struct ref **match)
Daniel Barkalow6b628162007-05-12 15:45:59[diff] [blame]1110{
1111 unsigned char sha1[20];
Daniel Barkalow6b628162007-05-12 15:45:59[diff] [blame]1112
Jeff King471fd3f2014-03-05 19:03:43[diff] [blame]1113 if (!*name) {
1114 if (match)
1115 *match = alloc_delete_ref();
1116 return 0;
1117 }
1118
Daniel Barkalow6b628162007-05-12 15:45:59[diff] [blame]1119 if (get_sha1(name, sha1))
Jeff King471fd3f2014-03-05 19:03:43[diff] [blame]1120 return -1;
1121
1122 if (match) {
1123 *match = alloc_ref(name);
1124 hashcpy((*match)->new_sha1, sha1);
1125 }
1126 return 0;
Daniel Barkalow6b628162007-05-12 15:45:59[diff] [blame]1127}
1128
Daniel Barkalow1d735262007-07-10 04:47:26[diff] [blame]1129static struct ref *make_linked_ref(const char *name, struct ref ***tail)
Junio C Hamano163f0ee2007-06-09 07:07:34[diff] [blame]1130{
René Scharfe59c69c02008-10-18 08:44:18[diff] [blame]1131 struct ref *ret = alloc_ref(name);
Daniel Barkalow1d735262007-07-10 04:47:26[diff] [blame]1132 tail_link_ref(ret, tail);
1133 return ret;
Junio C Hamano163f0ee2007-06-09 07:07:34[diff] [blame]1134}
1135
Jeff Kingf8aae122008-04-23 09:16:06[diff] [blame]1136static char *guess_ref(const char *name, struct ref *peer)
1137{
1138 struct strbuf buf = STRBUF_INIT;
1139 unsigned char sha1[20];
1140
Ronnie Sahlberg7695d112014-07-15 19:59:36[diff] [blame]1141 const char *r = resolve_ref_unsafe(peer->name, RESOLVE_REF_READING,
1142 sha1, NULL);
Jeff Kingf8aae122008-04-23 09:16:06[diff] [blame]1143 if (!r)
1144 return NULL;
1145
Christian Couder59556542013-11-30 20:55:40[diff] [blame]1146 if (starts_with(r, "refs/heads/"))
Jeff Kingf8aae122008-04-23 09:16:06[diff] [blame]1147 strbuf_addstr(&buf, "refs/heads/");
Christian Couder59556542013-11-30 20:55:40[diff] [blame]1148 else if (starts_with(r, "refs/tags/"))
Jeff Kingf8aae122008-04-23 09:16:06[diff] [blame]1149 strbuf_addstr(&buf, "refs/tags/");
1150 else
1151 return NULL;
1152
1153 strbuf_addstr(&buf, name);
1154 return strbuf_detach(&buf, NULL);
1155}
1156
Jeff Kingf7ade3d2014-03-05 19:03:21[diff] [blame]1157static int match_explicit_lhs(struct ref *src,
1158 struct refspec *rs,
1159 struct ref **match,
1160 int *allocated_match)
1161{
1162 switch (count_refspec_match(rs->src, src, match)) {
1163 case 1:
Jeff King471fd3f2014-03-05 19:03:43[diff] [blame]1164 if (allocated_match)
1165 *allocated_match = 0;
Jeff Kingf7ade3d2014-03-05 19:03:21[diff] [blame]1166 return 0;
1167 case 0:
1168 /* The source could be in the get_sha1() format
1169 * not a reference name. :refs/other is a
1170 * way to delete 'other' ref at the remote end.
1171 */
Jeff King471fd3f2014-03-05 19:03:43[diff] [blame]1172 if (try_explicit_object_name(rs->src, match) < 0)
Jeff Kingf7ade3d2014-03-05 19:03:21[diff] [blame]1173 return error("src refspec %s does not match any.", rs->src);
Jeff King471fd3f2014-03-05 19:03:43[diff] [blame]1174 if (allocated_match)
1175 *allocated_match = 1;
Jeff Kingf7ade3d2014-03-05 19:03:21[diff] [blame]1176 return 0;
1177 default:
1178 return error("src refspec %s matches more than one.", rs->src);
1179 }
1180}
1181
Junio C Hamano54a8ad92007-06-09 06:22:58[diff] [blame]1182static int match_explicit(struct ref *src, struct ref *dst,
1183 struct ref ***dst_tail,
Jeff King9a7bbd12008-06-16 16:15:02[diff] [blame]1184 struct refspec *rs)
Junio C Hamano54a8ad92007-06-09 06:22:58[diff] [blame]1185{
1186 struct ref *matched_src, *matched_dst;
Jeff Kingf7ade3d2014-03-05 19:03:21[diff] [blame]1187 int allocated_src;
Junio C Hamano54a8ad92007-06-09 06:22:58[diff] [blame]1188
1189 const char *dst_value = rs->dst;
Jeff Kingf8aae122008-04-23 09:16:06[diff] [blame]1190 char *dst_guess;
Junio C Hamano54a8ad92007-06-09 06:22:58[diff] [blame]1191
Paolo Bonzinia83619d2008-04-28 15:32:12[diff] [blame]1192 if (rs->pattern || rs->matching)
Jeff King9a7bbd12008-06-16 16:15:02[diff] [blame]1193 return 0;
Junio C Hamano54a8ad92007-06-09 06:22:58[diff] [blame]1194
Junio C Hamano54a8ad92007-06-09 06:22:58[diff] [blame]1195 matched_src = matched_dst = NULL;
Jeff Kingf7ade3d2014-03-05 19:03:21[diff] [blame]1196 if (match_explicit_lhs(src, rs, &matched_src, &allocated_src) < 0)
1197 return -1;
Junio C Hamano3c8b7df2007-06-09 07:14:04[diff] [blame]1198
Shawn O. Pearce4491e622007-09-25 04:13:25[diff] [blame]1199 if (!dst_value) {
Daniel Barkalow9f0ea7e2008-02-20 17:54:05[diff] [blame]1200 unsigned char sha1[20];
1201 int flag;
1202
Ronnie Sahlberg7695d112014-07-15 19:59:36[diff] [blame]1203 dst_value = resolve_ref_unsafe(matched_src->name,
1204 RESOLVE_REF_READING,
1205 sha1, &flag);
Daniel Barkalow9f0ea7e2008-02-20 17:54:05[diff] [blame]1206 if (!dst_value ||
1207 ((flag & REF_ISSYMREF) &&
Christian Couder59556542013-11-30 20:55:40[diff] [blame]1208 !starts_with(dst_value, "refs/heads/")))
Daniel Barkalow9f0ea7e2008-02-20 17:54:05[diff] [blame]1209 die("%s cannot be resolved to branch.",
1210 matched_src->name);
Shawn O. Pearce4491e622007-09-25 04:13:25[diff] [blame]1211 }
Junio C Hamano3c8b7df2007-06-09 07:14:04[diff] [blame]1212
Junio C Hamano54a8ad92007-06-09 06:22:58[diff] [blame]1213 switch (count_refspec_match(dst_value, dst, &matched_dst)) {
1214 case 1:
1215 break;
1216 case 0:
René Scharfe50e19a82014-06-06 17:24:48[diff] [blame]1217 if (starts_with(dst_value, "refs/"))
Daniel Barkalow1d735262007-07-10 04:47:26[diff] [blame]1218 matched_dst = make_linked_ref(dst_value, dst_tail);
Jeff King5742c822012-07-03 18:04:39[diff] [blame]1219 else if (is_null_sha1(matched_src->new_sha1))
1220 error("unable to delete '%s': remote ref does not exist",
1221 dst_value);
Brian Gianforcaroeeefa7c2009-09-01 05:35:10[diff] [blame]1222 else if ((dst_guess = guess_ref(dst_value, matched_src)))
Jeff Kingf8aae122008-04-23 09:16:06[diff] [blame]1223 matched_dst = make_linked_ref(dst_guess, dst_tail);
Junio C Hamano3c8b7df2007-06-09 07:14:04[diff] [blame]1224 else
Jeff Kingf8aae122008-04-23 09:16:06[diff] [blame]1225 error("unable to push to unqualified destination: %s\n"
1226 "The destination refspec neither matches an "
1227 "existing ref on the remote nor\n"
1228 "begins with refs/, and we are unable to "
1229 "guess a prefix based on the source ref.",
1230 dst_value);
Junio C Hamano54a8ad92007-06-09 06:22:58[diff] [blame]1231 break;
1232 default:
Junio C Hamano3c8b7df2007-06-09 07:14:04[diff] [blame]1233 matched_dst = NULL;
Junio C Hamano54a8ad92007-06-09 06:22:58[diff] [blame]1234 error("dst refspec %s matches more than one.",
1235 dst_value);
1236 break;
1237 }
Jeff King9a7bbd12008-06-16 16:15:02[diff] [blame]1238 if (!matched_dst)
1239 return -1;
1240 if (matched_dst->peer_ref)
1241 return error("dst ref %s receives from more than one src.",
Junio C Hamano54a8ad92007-06-09 06:22:58[diff] [blame]1242 matched_dst->name);
Junio C Hamano54a8ad92007-06-09 06:22:58[diff] [blame]1243 else {
Jeff Kingf7ade3d2014-03-05 19:03:21[diff] [blame]1244 matched_dst->peer_ref = allocated_src ?
1245 matched_src :
1246 copy_ref(matched_src);
Junio C Hamano54a8ad92007-06-09 06:22:58[diff] [blame]1247 matched_dst->force = rs->force;
1248 }
Jeff King9a7bbd12008-06-16 16:15:02[diff] [blame]1249 return 0;
Junio C Hamano54a8ad92007-06-09 06:22:58[diff] [blame]1250}
1251
Daniel Barkalow6b628162007-05-12 15:45:59[diff] [blame]1252static int match_explicit_refs(struct ref *src, struct ref *dst,
1253 struct ref ***dst_tail, struct refspec *rs,
1254 int rs_nr)
1255{
1256 int i, errs;
Junio C Hamano54a8ad92007-06-09 06:22:58[diff] [blame]1257 for (i = errs = 0; i < rs_nr; i++)
Jeff King9a7bbd12008-06-16 16:15:02[diff] [blame]1258 errs += match_explicit(src, dst, dst_tail, &rs[i]);
1259 return errs;
Daniel Barkalow6b628162007-05-12 15:45:59[diff] [blame]1260}
1261
Felipe Contrerasdb70a042012-02-22 22:43:39[diff] [blame]1262static char *get_ref_match(const struct refspec *rs, int rs_nr, const struct ref *ref,
Felipe Contreras6ddba5e2012-02-22 22:43:41[diff] [blame]1263 int send_mirror, int direction, const struct refspec **ret_pat)
Daniel Barkalow8558fd92007-05-25 05:20:56[diff] [blame]1264{
Felipe Contrerasdb70a042012-02-22 22:43:39[diff] [blame]1265 const struct refspec *pat;
1266 char *name;
Daniel Barkalow8558fd92007-05-25 05:20:56[diff] [blame]1267 int i;
Paolo Bonzinia83619d2008-04-28 15:32:12[diff] [blame]1268 int matching_refs = -1;
Daniel Barkalow8558fd92007-05-25 05:20:56[diff] [blame]1269 for (i = 0; i < rs_nr; i++) {
Paolo Bonzinia83619d2008-04-28 15:32:12[diff] [blame]1270 if (rs[i].matching &&
1271 (matching_refs == -1 || rs[i].force)) {
1272 matching_refs = i;
1273 continue;
1274 }
1275
Felipe Contrerasdb70a042012-02-22 22:43:39[diff] [blame]1276 if (rs[i].pattern) {
1277 const char *dst_side = rs[i].dst ? rs[i].dst : rs[i].src;
Felipe Contreras6ddba5e2012-02-22 22:43:41[diff] [blame]1278 int match;
1279 if (direction == FROM_SRC)
1280 match = match_name_with_pattern(rs[i].src, ref->name, dst_side, &name);
1281 else
1282 match = match_name_with_pattern(dst_side, ref->name, rs[i].src, &name);
1283 if (match) {
Felipe Contrerasdb70a042012-02-22 22:43:39[diff] [blame]1284 matching_refs = i;
1285 break;
1286 }
1287 }
Daniel Barkalow8558fd92007-05-25 05:20:56[diff] [blame]1288 }
Felipe Contrerasdb70a042012-02-22 22:43:39[diff] [blame]1289 if (matching_refs == -1)
Paolo Bonzinia83619d2008-04-28 15:32:12[diff] [blame]1290 return NULL;
Felipe Contrerasdb70a042012-02-22 22:43:39[diff] [blame]1291
1292 pat = rs + matching_refs;
1293 if (pat->matching) {
1294 /*
1295 * "matching refs"; traditionally we pushed everything
1296 * including refs outside refs/heads/ hierarchy, but
1297 * that does not make much sense these days.
1298 */
Christian Couder59556542013-11-30 20:55:40[diff] [blame]1299 if (!send_mirror && !starts_with(ref->name, "refs/heads/"))
Felipe Contrerasdb70a042012-02-22 22:43:39[diff] [blame]1300 return NULL;
1301 name = xstrdup(ref->name);
1302 }
1303 if (ret_pat)
1304 *ret_pat = pat;
1305 return name;
Daniel Barkalow8558fd92007-05-25 05:20:56[diff] [blame]1306}
1307
Clemens Buchacher6d2bf962009-05-31 14:26:48[diff] [blame]1308static struct ref **tail_ref(struct ref **head)
1309{
1310 struct ref **tail = head;
1311 while (*tail)
1312 tail = &((*tail)->next);
1313 return tail;
1314}
1315
Junio C Hamanoc2aba152013-03-04 20:09:50[diff] [blame]1316struct tips {
1317 struct commit **tip;
1318 int nr, alloc;
1319};
1320
1321static void add_to_tips(struct tips *tips, const unsigned char *sha1)
1322{
1323 struct commit *commit;
1324
1325 if (is_null_sha1(sha1))
1326 return;
1327 commit = lookup_commit_reference_gently(sha1, 1);
1328 if (!commit || (commit->object.flags & TMP_MARK))
1329 return;
1330 commit->object.flags |= TMP_MARK;
1331 ALLOC_GROW(tips->tip, tips->nr + 1, tips->alloc);
1332 tips->tip[tips->nr++] = commit;
1333}
1334
1335static void add_missing_tags(struct ref *src, struct ref **dst, struct ref ***dst_tail)
1336{
1337 struct string_list dst_tag = STRING_LIST_INIT_NODUP;
1338 struct string_list src_tag = STRING_LIST_INIT_NODUP;
1339 struct string_list_item *item;
1340 struct ref *ref;
1341 struct tips sent_tips;
1342
1343 /*
1344 * Collect everything we know they would have at the end of
1345 * this push, and collect all tags they have.
1346 */
1347 memset(&sent_tips, 0, sizeof(sent_tips));
1348 for (ref = *dst; ref; ref = ref->next) {
1349 if (ref->peer_ref &&
1350 !is_null_sha1(ref->peer_ref->new_sha1))
1351 add_to_tips(&sent_tips, ref->peer_ref->new_sha1);
1352 else
1353 add_to_tips(&sent_tips, ref->old_sha1);
Christian Couder59556542013-11-30 20:55:40[diff] [blame]1354 if (starts_with(ref->name, "refs/tags/"))
Junio C Hamanoc2aba152013-03-04 20:09:50[diff] [blame]1355 string_list_append(&dst_tag, ref->name);
1356 }
1357 clear_commit_marks_many(sent_tips.nr, sent_tips.tip, TMP_MARK);
1358
Michael Haggerty3383e192014-11-25 08:02:35[diff] [blame]1359 string_list_sort(&dst_tag);
Junio C Hamanoc2aba152013-03-04 20:09:50[diff] [blame]1360
1361 /* Collect tags they do not have. */
1362 for (ref = src; ref; ref = ref->next) {
Christian Couder59556542013-11-30 20:55:40[diff] [blame]1363 if (!starts_with(ref->name, "refs/tags/"))
Junio C Hamanoc2aba152013-03-04 20:09:50[diff] [blame]1364 continue; /* not a tag */
1365 if (string_list_has_string(&dst_tag, ref->name))
1366 continue; /* they already have it */
1367 if (sha1_object_info(ref->new_sha1, NULL) != OBJ_TAG)
1368 continue; /* be conservative */
1369 item = string_list_append(&src_tag, ref->name);
1370 item->util = ref;
1371 }
1372 string_list_clear(&dst_tag, 0);
1373
1374 /*
1375 * At this point, src_tag lists tags that are missing from
1376 * dst, and sent_tips lists the tips we are pushing or those
1377 * that we know they already have. An element in the src_tag
1378 * that is an ancestor of any of the sent_tips needs to be
1379 * sent to the other side.
1380 */
1381 if (sent_tips.nr) {
1382 for_each_string_list_item(item, &src_tag) {
1383 struct ref *ref = item->util;
1384 struct ref *dst_ref;
1385 struct commit *commit;
1386
1387 if (is_null_sha1(ref->new_sha1))
1388 continue;
1389 commit = lookup_commit_reference_gently(ref->new_sha1, 1);
1390 if (!commit)
1391 /* not pushing a commit, which is not an error */
1392 continue;
1393
1394 /*
1395 * Is this tag, which they do not have, reachable from
1396 * any of the commits we are sending?
1397 */
1398 if (!in_merge_bases_many(commit, sent_tips.nr, sent_tips.tip))
1399 continue;
1400
1401 /* Add it in */
1402 dst_ref = make_linked_ref(ref->name, dst_tail);
1403 hashcpy(dst_ref->new_sha1, ref->new_sha1);
1404 dst_ref->peer_ref = copy_ref(ref);
1405 }
1406 }
1407 string_list_clear(&src_tag, 0);
1408 free(sent_tips.tip);
1409}
1410
Junio C Hamano47a59182013-07-08 20:56:53[diff] [blame]1411struct ref *find_ref_by_name(const struct ref *list, const char *name)
1412{
1413 for ( ; list; list = list->next)
1414 if (!strcmp(list->name, name))
1415 return (struct ref *)list;
1416 return NULL;
1417}
1418
Brandon Caseyf1bd15a2013-07-08 08:58:39[diff] [blame]1419static void prepare_ref_index(struct string_list *ref_index, struct ref *ref)
1420{
1421 for ( ; ref; ref = ref->next)
1422 string_list_append_nodup(ref_index, ref->name)->util = ref;
1423
Michael Haggerty3383e192014-11-25 08:02:35[diff] [blame]1424 string_list_sort(ref_index);
Brandon Caseyf1bd15a2013-07-08 08:58:39[diff] [blame]1425}
1426
Junio C Hamano54a8ad92007-06-09 06:22:58[diff] [blame]1427/*
Jeff Kingba928c12014-03-05 19:04:54[diff] [blame]1428 * Given only the set of local refs, sanity-check the set of push
1429 * refspecs. We can't catch all errors that match_push_refs would,
1430 * but we can catch some errors early before even talking to the
1431 * remote side.
1432 */
1433int check_push_refs(struct ref *src, int nr_refspec, const char **refspec_names)
1434{
1435 struct refspec *refspec = parse_push_refspec(nr_refspec, refspec_names);
1436 int ret = 0;
1437 int i;
1438
1439 for (i = 0; i < nr_refspec; i++) {
1440 struct refspec *rs = refspec + i;
1441
1442 if (rs->pattern || rs->matching)
1443 continue;
1444
1445 ret |= match_explicit_lhs(src, rs, NULL, NULL);
1446 }
1447
1448 free_refspec(nr_refspec, refspec);
1449 return ret;
1450}
1451
1452/*
Junio C Hamano29753cd2011-09-09 18:54:58[diff] [blame]1453 * Given the set of refs the local repository has, the set of refs the
1454 * remote repository has, and the refspec used for push, determine
1455 * what remote refs we will update and with what value by setting
1456 * peer_ref (which object is being pushed) and force (if the push is
1457 * forced) in elements of "dst". The function may add new elements to
1458 * dst (e.g. pushing to a new branch, done in match_explicit_refs).
Junio C Hamano54a8ad92007-06-09 06:22:58[diff] [blame]1459 */
Junio C Hamano29753cd2011-09-09 18:54:58[diff] [blame]1460int match_push_refs(struct ref *src, struct ref **dst,
1461 int nr_refspec, const char **refspec, int flags)
Daniel Barkalow6b628162007-05-12 15:45:59[diff] [blame]1462{
Paolo Bonzinia83619d2008-04-28 15:32:12[diff] [blame]1463 struct refspec *rs;
Andy Whitcroft28b9d6e2007-11-09 23:32:10[diff] [blame]1464 int send_all = flags & MATCH_REFS_ALL;
1465 int send_mirror = flags & MATCH_REFS_MIRROR;
Felipe Contreras6ddba5e2012-02-22 22:43:41[diff] [blame]1466 int send_prune = flags & MATCH_REFS_PRUNE;
Jay Soffian5f48cb92009-02-25 08:32:17[diff] [blame]1467 int errs;
Linus Torvalds2af202b2009-06-18 17:28:43[diff] [blame]1468 static const char *default_refspec[] = { ":", NULL };
Felipe Contrerasb1d8b1f2012-02-22 22:43:38[diff] [blame]1469 struct ref *ref, **dst_tail = tail_ref(dst);
Brandon Caseyf1bd15a2013-07-08 08:58:39[diff] [blame]1470 struct string_list dst_ref_index = STRING_LIST_INIT_NODUP;
Daniel Barkalow6b628162007-05-12 15:45:59[diff] [blame]1471
Paolo Bonzinia83619d2008-04-28 15:32:12[diff] [blame]1472 if (!nr_refspec) {
1473 nr_refspec = 1;
1474 refspec = default_refspec;
1475 }
1476 rs = parse_push_refspec(nr_refspec, (const char **) refspec);
Clemens Buchacher6d2bf962009-05-31 14:26:48[diff] [blame]1477 errs = match_explicit_refs(src, *dst, &dst_tail, rs, nr_refspec);
Daniel Barkalow6b628162007-05-12 15:45:59[diff] [blame]1478
1479 /* pick the remainder */
Felipe Contrerasb1d8b1f2012-02-22 22:43:38[diff] [blame]1480 for (ref = src; ref; ref = ref->next) {
Brandon Caseyf1bd15a2013-07-08 08:58:39[diff] [blame]1481 struct string_list_item *dst_item;
Daniel Barkalow6b628162007-05-12 15:45:59[diff] [blame]1482 struct ref *dst_peer;
Alex Riesen6e66bf32007-06-07 23:43:05[diff] [blame]1483 const struct refspec *pat = NULL;
1484 char *dst_name;
Felipe Contrerasdb70a042012-02-22 22:43:39[diff] [blame]1485
Felipe Contreras6ddba5e2012-02-22 22:43:41[diff] [blame]1486 dst_name = get_ref_match(rs, nr_refspec, ref, send_mirror, FROM_SRC, &pat);
Felipe Contrerasdb70a042012-02-22 22:43:39[diff] [blame]1487 if (!dst_name)
Paolo Bonzinia83619d2008-04-28 15:32:12[diff] [blame]1488 continue;
1489
Brandon Caseyf1bd15a2013-07-08 08:58:39[diff] [blame]1490 if (!dst_ref_index.nr)
1491 prepare_ref_index(&dst_ref_index, *dst);
1492
1493 dst_item = string_list_lookup(&dst_ref_index, dst_name);
1494 dst_peer = dst_item ? dst_item->util : NULL;
Paolo Bonzinia83619d2008-04-28 15:32:12[diff] [blame]1495 if (dst_peer) {
1496 if (dst_peer->peer_ref)
1497 /* We're already sending something to this ref. */
1498 goto free_name;
Paolo Bonzinia83619d2008-04-28 15:32:12[diff] [blame]1499 } else {
1500 if (pat->matching && !(send_all || send_mirror))
1501 /*
1502 * Remote doesn't have it, and we have no
1503 * explicit pattern, and we don't have
Justin Lebar01689902014-03-31 22:11:46[diff] [blame]1504 * --all or --mirror.
Paolo Bonzinia83619d2008-04-28 15:32:12[diff] [blame]1505 */
1506 goto free_name;
1507
Daniel Barkalow6b628162007-05-12 15:45:59[diff] [blame]1508 /* Create a new one and link it */
Clemens Buchacher6d2bf962009-05-31 14:26:48[diff] [blame]1509 dst_peer = make_linked_ref(dst_name, &dst_tail);
Felipe Contrerasb1d8b1f2012-02-22 22:43:38[diff] [blame]1510 hashcpy(dst_peer->new_sha1, ref->new_sha1);
Brandon Caseyf1bd15a2013-07-08 08:58:39[diff] [blame]1511 string_list_insert(&dst_ref_index,
1512 dst_peer->name)->util = dst_peer;
Daniel Barkalow6b628162007-05-12 15:45:59[diff] [blame]1513 }
Felipe Contrerasb1d8b1f2012-02-22 22:43:38[diff] [blame]1514 dst_peer->peer_ref = copy_ref(ref);
Paolo Bonzinia83619d2008-04-28 15:32:12[diff] [blame]1515 dst_peer->force = pat->force;
Alex Riesen6e66bf32007-06-07 23:43:05[diff] [blame]1516 free_name:
1517 free(dst_name);
Daniel Barkalow6b628162007-05-12 15:45:59[diff] [blame]1518 }
Junio C Hamanoc2aba152013-03-04 20:09:50[diff] [blame]1519
Brandon Caseyf1bd15a2013-07-08 08:58:39[diff] [blame]1520 string_list_clear(&dst_ref_index, 0);
1521
Junio C Hamanoc2aba152013-03-04 20:09:50[diff] [blame]1522 if (flags & MATCH_REFS_FOLLOW_TAGS)
1523 add_missing_tags(src, dst, &dst_tail);
1524
Felipe Contreras6ddba5e2012-02-22 22:43:41[diff] [blame]1525 if (send_prune) {
Brandon Caseyf1bd15a2013-07-08 08:58:39[diff] [blame]1526 struct string_list src_ref_index = STRING_LIST_INIT_NODUP;
Felipe Contreras6ddba5e2012-02-22 22:43:41[diff] [blame]1527 /* check for missing refs on the remote */
1528 for (ref = *dst; ref; ref = ref->next) {
1529 char *src_name;
1530
1531 if (ref->peer_ref)
1532 /* We're already sending something to this ref. */
1533 continue;
1534
1535 src_name = get_ref_match(rs, nr_refspec, ref, send_mirror, FROM_DST, NULL);
1536 if (src_name) {
Brandon Caseyf1bd15a2013-07-08 08:58:39[diff] [blame]1537 if (!src_ref_index.nr)
1538 prepare_ref_index(&src_ref_index, src);
1539 if (!string_list_has_string(&src_ref_index,
1540 src_name))
Felipe Contreras6ddba5e2012-02-22 22:43:41[diff] [blame]1541 ref->peer_ref = alloc_delete_ref();
1542 free(src_name);
1543 }
1544 }
Brandon Caseyf1bd15a2013-07-08 08:58:39[diff] [blame]1545 string_list_clear(&src_ref_index, 0);
Felipe Contreras6ddba5e2012-02-22 22:43:41[diff] [blame]1546 }
Jay Soffian5f48cb92009-02-25 08:32:17[diff] [blame]1547 if (errs)
1548 return -1;
Daniel Barkalow6b628162007-05-12 15:45:59[diff] [blame]1549 return 0;
1550}
Daniel Barkalowcf818342007-09-11 03:02:56[diff] [blame]1551
Tay Ray Chuan20e8b462010-01-08 02:12:42[diff] [blame]1552void set_ref_status_for_push(struct ref *remote_refs, int send_mirror,
Junio C Hamano631b5ef2013-07-08 21:42:40[diff] [blame]1553 int force_update)
Tay Ray Chuan20e8b462010-01-08 02:12:42[diff] [blame]1554{
1555 struct ref *ref;
1556
1557 for (ref = remote_refs; ref; ref = ref->next) {
Chris Rorvick8c5f6f72012-11-30 01:41:36[diff] [blame]1558 int force_ref_update = ref->force || force_update;
Junio C Hamano631b5ef2013-07-08 21:42:40[diff] [blame]1559 int reject_reason = 0;
Chris Rorvick8c5f6f72012-11-30 01:41:36[diff] [blame]1560
Tay Ray Chuan20e8b462010-01-08 02:12:42[diff] [blame]1561 if (ref->peer_ref)
1562 hashcpy(ref->new_sha1, ref->peer_ref->new_sha1);
1563 else if (!send_mirror)
1564 continue;
1565
1566 ref->deletion = is_null_sha1(ref->new_sha1);
1567 if (!ref->deletion &&
1568 !hashcmp(ref->old_sha1, ref->new_sha1)) {
1569 ref->status = REF_STATUS_UPTODATE;
1570 continue;
1571 }
1572
Chris Rorvicka272b282012-11-30 01:41:40[diff] [blame]1573 /*
Junio C Hamano631b5ef2013-07-08 21:42:40[diff] [blame]1574 * Bypass the usual "must fast-forward" check but
1575 * replace it with a weaker "the old value must be
1576 * this value we observed". If the remote ref has
1577 * moved and is now different from what we expect,
1578 * reject any push.
1579 *
1580 * It also is an error if the user told us to check
1581 * with the remote-tracking branch to find the value
1582 * to expect, but we did not have such a tracking
1583 * branch.
1584 */
1585 if (ref->expect_old_sha1) {
1586 if (ref->expect_old_no_trackback ||
1587 hashcmp(ref->old_sha1, ref->old_sha1_expect))
1588 reject_reason = REF_STATUS_REJECT_STALE;
1589 }
1590
1591 /*
1592 * The usual "must fast-forward" rules.
1593 *
Junio C Hamano256b9d72013-01-16 21:02:27[diff] [blame]1594 * Decide whether an individual refspec A:B can be
1595 * pushed. The push will succeed if any of the
1596 * following are true:
Tay Ray Chuan20e8b462010-01-08 02:12:42[diff] [blame]1597 *
Chris Rorvicka272b282012-11-30 01:41:40[diff] [blame]1598 * (1) the remote reference B does not exist
Tay Ray Chuan20e8b462010-01-08 02:12:42[diff] [blame]1599 *
Chris Rorvicka272b282012-11-30 01:41:40[diff] [blame]1600 * (2) the remote reference B is being removed (i.e.,
1601 * pushing :B where no source is specified)
Tay Ray Chuan20e8b462010-01-08 02:12:42[diff] [blame]1602 *
Junio C Hamano256b9d72013-01-16 21:02:27[diff] [blame]1603 * (3) the destination is not under refs/tags/, and
1604 * if the old and new value is a commit, the new
1605 * is a descendant of the old.
Tay Ray Chuan20e8b462010-01-08 02:12:42[diff] [blame]1606 *
Chris Rorvicka272b282012-11-30 01:41:40[diff] [blame]1607 * (4) it is forced using the +A:B notation, or by
1608 * passing the --force argument
Tay Ray Chuan20e8b462010-01-08 02:12:42[diff] [blame]1609 */
1610
Junio C Hamano631b5ef2013-07-08 21:42:40[diff] [blame]1611 else if (!ref->deletion && !is_null_sha1(ref->old_sha1)) {
Christian Couder59556542013-11-30 20:55:40[diff] [blame]1612 if (starts_with(ref->name, "refs/tags/"))
Junio C Hamano631b5ef2013-07-08 21:42:40[diff] [blame]1613 reject_reason = REF_STATUS_REJECT_ALREADY_EXISTS;
Junio C Hamano75e5c0d2013-01-23 21:55:30[diff] [blame]1614 else if (!has_sha1_file(ref->old_sha1))
Junio C Hamano631b5ef2013-07-08 21:42:40[diff] [blame]1615 reject_reason = REF_STATUS_REJECT_FETCH_FIRST;
Junio C Hamano75e5c0d2013-01-23 21:55:30[diff] [blame]1616 else if (!lookup_commit_reference_gently(ref->old_sha1, 1) ||
1617 !lookup_commit_reference_gently(ref->new_sha1, 1))
Junio C Hamano631b5ef2013-07-08 21:42:40[diff] [blame]1618 reject_reason = REF_STATUS_REJECT_NEEDS_FORCE;
Junio C Hamano75e5c0d2013-01-23 21:55:30[diff] [blame]1619 else if (!ref_newer(ref->new_sha1, ref->old_sha1))
Junio C Hamano631b5ef2013-07-08 21:42:40[diff] [blame]1620 reject_reason = REF_STATUS_REJECT_NONFASTFORWARD;
Tay Ray Chuan20e8b462010-01-08 02:12:42[diff] [blame]1621 }
Junio C Hamano631b5ef2013-07-08 21:42:40[diff] [blame]1622
1623 /*
1624 * "--force" will defeat any rejection implemented
1625 * by the rules above.
1626 */
1627 if (!force_ref_update)
1628 ref->status = reject_reason;
1629 else if (reject_reason)
1630 ref->forced_update = 1;
Tay Ray Chuan20e8b462010-01-08 02:12:42[diff] [blame]1631 }
1632}
1633
Junio C Hamano05e73682014-10-14 21:42:04[diff] [blame]1634static void set_merge(struct branch *ret)
1635{
1636 char *ref;
1637 unsigned char sha1[20];
1638 int i;
1639
1640 ret->merge = xcalloc(ret->merge_nr, sizeof(*ret->merge));
1641 for (i = 0; i < ret->merge_nr; i++) {
1642 ret->merge[i] = xcalloc(1, sizeof(**ret->merge));
1643 ret->merge[i]->src = xstrdup(ret->merge_name[i]);
1644 if (!remote_find_tracking(ret->remote, ret->merge[i]) ||
1645 strcmp(ret->remote_name, "."))
1646 continue;
1647 if (dwim_ref(ret->merge_name[i], strlen(ret->merge_name[i]),
1648 sha1, &ref) == 1)
1649 ret->merge[i]->dst = ref;
1650 else
1651 ret->merge[i]->dst = xstrdup(ret->merge_name[i]);
1652 }
1653}
1654
Daniel Barkalowcf818342007-09-11 03:02:56[diff] [blame]1655struct branch *branch_get(const char *name)
1656{
1657 struct branch *ret;
1658
1659 read_config();
1660 if (!name || !*name || !strcmp(name, "HEAD"))
1661 ret = current_branch;
1662 else
1663 ret = make_branch(name, 0);
1664 if (ret && ret->remote_name) {
1665 ret->remote = remote_get(ret->remote_name);
Junio C Hamano05e73682014-10-14 21:42:04[diff] [blame]1666 if (ret->merge_nr)
1667 set_merge(ret);
Daniel Barkalowcf818342007-09-11 03:02:56[diff] [blame]1668 }
1669 return ret;
1670}
1671
1672int branch_has_merge_config(struct branch *branch)
1673{
1674 return branch && !!branch->merge;
1675}
1676
Shawn O. Pearce85682c12007-09-18 08:54:53[diff] [blame]1677int branch_merge_matches(struct branch *branch,
1678 int i,
1679 const char *refname)
Daniel Barkalowcf818342007-09-11 03:02:56[diff] [blame]1680{
Shawn O. Pearce85682c12007-09-18 08:54:53[diff] [blame]1681 if (!branch || i < 0 || i >= branch->merge_nr)
Daniel Barkalowcf818342007-09-11 03:02:56[diff] [blame]1682 return 0;
Michael Haggerty54457fe2014-01-14 03:16:07[diff] [blame]1683 return refname_match(branch->merge[i]->src, refname);
Daniel Barkalowcf818342007-09-11 03:02:56[diff] [blame]1684}
Daniel Barkalowd71ab172007-09-11 03:03:08[diff] [blame]1685
Junio C Hamanof8fb9712012-12-11 21:00:52[diff] [blame]1686static int ignore_symref_update(const char *refname)
1687{
1688 unsigned char sha1[20];
1689 int flag;
1690
Ronnie Sahlberg7695d112014-07-15 19:59:36[diff] [blame]1691 if (!resolve_ref_unsafe(refname, 0, sha1, &flag))
Junio C Hamanof8fb9712012-12-11 21:00:52[diff] [blame]1692 return 0; /* non-existing refs are OK */
1693 return (flag & REF_ISSYMREF);
1694}
1695
Michael Haggertyf166db22013-10-30 05:32:56[diff] [blame]1696/*
1697 * Create and return a list of (struct ref) consisting of copies of
1698 * each remote_ref that matches refspec. refspec must be a pattern.
1699 * Fill in the copies' peer_ref to describe the local tracking refs to
1700 * which they map. Omit any references that would map to an existing
1701 * local symbolic ref.
1702 */
Daniel Barkalow45773702007-10-30 01:05:40[diff] [blame]1703static struct ref *get_expanded_map(const struct ref *remote_refs,
Daniel Barkalowd71ab172007-09-11 03:03:08[diff] [blame]1704 const struct refspec *refspec)
1705{
Daniel Barkalow45773702007-10-30 01:05:40[diff] [blame]1706 const struct ref *ref;
Daniel Barkalowd71ab172007-09-11 03:03:08[diff] [blame]1707 struct ref *ret = NULL;
1708 struct ref **tail = &ret;
1709
Daniel Barkalowd71ab172007-09-11 03:03:08[diff] [blame]1710 for (ref = remote_refs; ref; ref = ref->next) {
Michael Haggertye31a17f2013-10-30 05:32:57[diff] [blame]1711 char *expn_name = NULL;
1712
Daniel Barkalowd71ab172007-09-11 03:03:08[diff] [blame]1713 if (strchr(ref->name, '^'))
1714 continue; /* a dereference item */
Daniel Barkalowe9282132009-03-07 06:11:34[diff] [blame]1715 if (match_name_with_pattern(refspec->src, ref->name,
Junio C Hamanof8fb9712012-12-11 21:00:52[diff] [blame]1716 refspec->dst, &expn_name) &&
1717 !ignore_symref_update(expn_name)) {
Daniel Barkalowd71ab172007-09-11 03:03:08[diff] [blame]1718 struct ref *cpy = copy_ref(ref);
Daniel Barkalowd71ab172007-09-11 03:03:08[diff] [blame]1719
Daniel Barkalowe9282132009-03-07 06:11:34[diff] [blame]1720 cpy->peer_ref = alloc_ref(expn_name);
Daniel Barkalowd71ab172007-09-11 03:03:08[diff] [blame]1721 if (refspec->force)
1722 cpy->peer_ref->force = 1;
1723 *tail = cpy;
1724 tail = &cpy->next;
1725 }
Michael Haggertye31a17f2013-10-30 05:32:57[diff] [blame]1726 free(expn_name);
Daniel Barkalowd71ab172007-09-11 03:03:08[diff] [blame]1727 }
1728
1729 return ret;
1730}
1731
Daniel Barkalow45773702007-10-30 01:05:40[diff] [blame]1732static const struct ref *find_ref_by_name_abbrev(const struct ref *refs, const char *name)
Daniel Barkalowd71ab172007-09-11 03:03:08[diff] [blame]1733{
Daniel Barkalow45773702007-10-30 01:05:40[diff] [blame]1734 const struct ref *ref;
Daniel Barkalowd71ab172007-09-11 03:03:08[diff] [blame]1735 for (ref = refs; ref; ref = ref->next) {
Michael Haggerty54457fe2014-01-14 03:16:07[diff] [blame]1736 if (refname_match(name, ref->name))
Daniel Barkalowd71ab172007-09-11 03:03:08[diff] [blame]1737 return ref;
1738 }
1739 return NULL;
1740}
1741
Daniel Barkalow45773702007-10-30 01:05:40[diff] [blame]1742struct ref *get_remote_ref(const struct ref *remote_refs, const char *name)
Daniel Barkalowd71ab172007-09-11 03:03:08[diff] [blame]1743{
Daniel Barkalow45773702007-10-30 01:05:40[diff] [blame]1744 const struct ref *ref = find_ref_by_name_abbrev(remote_refs, name);
Daniel Barkalowd71ab172007-09-11 03:03:08[diff] [blame]1745
1746 if (!ref)
Junio C Hamano9ad7c5a2007-10-27 06:09:48[diff] [blame]1747 return NULL;
Daniel Barkalowd71ab172007-09-11 03:03:08[diff] [blame]1748
1749 return copy_ref(ref);
1750}
1751
1752static struct ref *get_local_ref(const char *name)
1753{
Clemens Buchacher3eb96992009-06-17 13:38:36[diff] [blame]1754 if (!name || name[0] == '\0')
Daniel Barkalowd71ab172007-09-11 03:03:08[diff] [blame]1755 return NULL;
1756
Christian Couder59556542013-11-30 20:55:40[diff] [blame]1757 if (starts_with(name, "refs/"))
René Scharfe59c69c02008-10-18 08:44:18[diff] [blame]1758 return alloc_ref(name);
Daniel Barkalowd71ab172007-09-11 03:03:08[diff] [blame]1759
Christian Couder59556542013-11-30 20:55:40[diff] [blame]1760 if (starts_with(name, "heads/") ||
1761 starts_with(name, "tags/") ||
1762 starts_with(name, "remotes/"))
René Scharfe80097682008-10-18 08:37:40[diff] [blame]1763 return alloc_ref_with_prefix("refs/", 5, name);
Daniel Barkalowd71ab172007-09-11 03:03:08[diff] [blame]1764
René Scharfe80097682008-10-18 08:37:40[diff] [blame]1765 return alloc_ref_with_prefix("refs/heads/", 11, name);
Daniel Barkalowd71ab172007-09-11 03:03:08[diff] [blame]1766}
1767
Daniel Barkalow45773702007-10-30 01:05:40[diff] [blame]1768int get_fetch_map(const struct ref *remote_refs,
Daniel Barkalowd71ab172007-09-11 03:03:08[diff] [blame]1769 const struct refspec *refspec,
Junio C Hamano9ad7c5a2007-10-27 06:09:48[diff] [blame]1770 struct ref ***tail,
1771 int missing_ok)
Daniel Barkalowd71ab172007-09-11 03:03:08[diff] [blame]1772{
Daniel Barkalowef00d152008-03-18 02:05:23[diff] [blame]1773 struct ref *ref_map, **rmp;
Daniel Barkalowd71ab172007-09-11 03:03:08[diff] [blame]1774
1775 if (refspec->pattern) {
1776 ref_map = get_expanded_map(remote_refs, refspec);
1777 } else {
Junio C Hamano9ad7c5a2007-10-27 06:09:48[diff] [blame]1778 const char *name = refspec->src[0] ? refspec->src : "HEAD";
Daniel Barkalowd71ab172007-09-11 03:03:08[diff] [blame]1779
Junio C Hamano6e7b66e2013-01-29 22:02:15[diff] [blame]1780 if (refspec->exact_sha1) {
1781 ref_map = alloc_ref(name);
1782 get_sha1_hex(name, ref_map->old_sha1);
1783 } else {
1784 ref_map = get_remote_ref(remote_refs, name);
1785 }
Junio C Hamano9ad7c5a2007-10-27 06:09:48[diff] [blame]1786 if (!missing_ok && !ref_map)
1787 die("Couldn't find remote ref %s", name);
1788 if (ref_map) {
1789 ref_map->peer_ref = get_local_ref(refspec->dst);
1790 if (ref_map->peer_ref && refspec->force)
1791 ref_map->peer_ref->force = 1;
1792 }
Daniel Barkalowd71ab172007-09-11 03:03:08[diff] [blame]1793 }
1794
Daniel Barkalowef00d152008-03-18 02:05:23[diff] [blame]1795 for (rmp = &ref_map; *rmp; ) {
1796 if ((*rmp)->peer_ref) {
Christian Couder59556542013-11-30 20:55:40[diff] [blame]1797 if (!starts_with((*rmp)->peer_ref->name, "refs/") ||
Junio C Hamano5c08c1f2012-05-04 22:35:18[diff] [blame]1798 check_refname_format((*rmp)->peer_ref->name, 0)) {
Daniel Barkalowef00d152008-03-18 02:05:23[diff] [blame]1799 struct ref *ignore = *rmp;
1800 error("* Ignoring funny ref '%s' locally",
1801 (*rmp)->peer_ref->name);
1802 *rmp = (*rmp)->next;
1803 free(ignore->peer_ref);
1804 free(ignore);
1805 continue;
1806 }
1807 }
1808 rmp = &((*rmp)->next);
Daniel Barkalowd71ab172007-09-11 03:03:08[diff] [blame]1809 }
1810
Alex Riesen8f70a762007-10-12 20:40:04[diff] [blame]1811 if (ref_map)
1812 tail_link_ref(ref_map, tail);
Daniel Barkalowd71ab172007-09-11 03:03:08[diff] [blame]1813
1814 return 0;
1815}
Daniel Barkalowbe885d92008-04-26 19:53:12[diff] [blame]1816
1817int resolve_remote_symref(struct ref *ref, struct ref *list)
1818{
1819 if (!ref->symref)
1820 return 0;
1821 for (; list; list = list->next)
1822 if (!strcmp(ref->symref, list->name)) {
1823 hashcpy(ref->old_sha1, list->old_sha1);
1824 return 0;
1825 }
1826 return 1;
1827}
Junio C Hamano6d21bf92008-07-02 07:51:18[diff] [blame]1828
Jay Soffianec8452d2009-02-25 08:32:12[diff] [blame]1829static void unmark_and_free(struct commit_list *list, unsigned int mark)
1830{
1831 while (list) {
1832 struct commit_list *temp = list;
1833 temp->item->object.flags &= ~mark;
1834 list = temp->next;
1835 free(temp);
1836 }
1837}
1838
1839int ref_newer(const unsigned char *new_sha1, const unsigned char *old_sha1)
1840{
1841 struct object *o;
1842 struct commit *old, *new;
1843 struct commit_list *list, *used;
1844 int found = 0;
1845
Junio C Hamano75e5c0d2013-01-23 21:55:30[diff] [blame]1846 /*
1847 * Both new and old must be commit-ish and new is descendant of
Jay Soffianec8452d2009-02-25 08:32:12[diff] [blame]1848 * old. Otherwise we require --force.
1849 */
1850 o = deref_tag(parse_object(old_sha1), NULL, 0);
1851 if (!o || o->type != OBJ_COMMIT)
1852 return 0;
1853 old = (struct commit *) o;
1854
1855 o = deref_tag(parse_object(new_sha1), NULL, 0);
1856 if (!o || o->type != OBJ_COMMIT)
1857 return 0;
1858 new = (struct commit *) o;
1859
1860 if (parse_commit(new) < 0)
1861 return 0;
1862
1863 used = list = NULL;
1864 commit_list_insert(new, &list);
1865 while (list) {
1866 new = pop_most_recent_commit(&list, TMP_MARK);
1867 commit_list_insert(new, &used);
1868 if (new == old) {
1869 found = 1;
1870 break;
1871 }
1872 }
1873 unmark_and_free(list, TMP_MARK);
1874 unmark_and_free(used, TMP_MARK);
1875 return found;
1876}
1877
Junio C Hamano6d21bf92008-07-02 07:51:18[diff] [blame]1878/*
Jiang Xinf2e08732013-08-26 07:02:48[diff] [blame]1879 * Compare a branch with its upstream, and save their differences (number
1880 * of commits) in *num_ours and *num_theirs.
1881 *
1882 * Return 0 if branch has no upstream (no base), -1 if upstream is missing
1883 * (with "gone" base), otherwise 1 (with base).
Junio C Hamano6d21bf92008-07-02 07:51:18[diff] [blame]1884 */
1885int stat_tracking_info(struct branch *branch, int *num_ours, int *num_theirs)
1886{
1887 unsigned char sha1[20];
1888 struct commit *ours, *theirs;
1889 char symmetric[84];
1890 struct rev_info revs;
1891 const char *rev_argv[10], *base;
1892 int rev_argc;
1893
Jiang Xinf2e08732013-08-26 07:02:48[diff] [blame]1894 /* Cannot stat unless we are marked to build on top of somebody else. */
Junio C Hamano6d21bf92008-07-02 07:51:18[diff] [blame]1895 if (!branch ||
1896 !branch->merge || !branch->merge[0] || !branch->merge[0]->dst)
1897 return 0;
1898
Jiang Xinf2e08732013-08-26 07:02:48[diff] [blame]1899 /* Cannot stat if what we used to build on no longer exists */
Junio C Hamano6d21bf92008-07-02 07:51:18[diff] [blame]1900 base = branch->merge[0]->dst;
Nguyễn Thái Ngọc Duyc6893322011-11-13 10:22:14[diff] [blame]1901 if (read_ref(base, sha1))
Jiang Xinf2e08732013-08-26 07:02:48[diff] [blame]1902 return -1;
Michael J Gruber57ffc5f2009-05-11 14:42:54[diff] [blame]1903 theirs = lookup_commit_reference(sha1);
Junio C Hamano6d21bf92008-07-02 07:51:18[diff] [blame]1904 if (!theirs)
Jiang Xinf2e08732013-08-26 07:02:48[diff] [blame]1905 return -1;
Junio C Hamano6d21bf92008-07-02 07:51:18[diff] [blame]1906
Nguyễn Thái Ngọc Duyc6893322011-11-13 10:22:14[diff] [blame]1907 if (read_ref(branch->refname, sha1))
Jiang Xinf2e08732013-08-26 07:02:48[diff] [blame]1908 return -1;
Michael J Gruber57ffc5f2009-05-11 14:42:54[diff] [blame]1909 ours = lookup_commit_reference(sha1);
Junio C Hamano6d21bf92008-07-02 07:51:18[diff] [blame]1910 if (!ours)
Jiang Xinf2e08732013-08-26 07:02:48[diff] [blame]1911 return -1;
Junio C Hamano6d21bf92008-07-02 07:51:18[diff] [blame]1912
1913 /* are we the same? */
Jiang Xinf2e08732013-08-26 07:02:48[diff] [blame]1914 if (theirs == ours) {
1915 *num_theirs = *num_ours = 0;
1916 return 1;
1917 }
Junio C Hamano6d21bf92008-07-02 07:51:18[diff] [blame]1918
Junio C Hamano8fbf8792009-04-21 23:32:18[diff] [blame]1919 /* Run "rev-list --left-right ours...theirs" internally... */
Junio C Hamano6d21bf92008-07-02 07:51:18[diff] [blame]1920 rev_argc = 0;
1921 rev_argv[rev_argc++] = NULL;
1922 rev_argv[rev_argc++] = "--left-right";
1923 rev_argv[rev_argc++] = symmetric;
1924 rev_argv[rev_argc++] = "--";
1925 rev_argv[rev_argc] = NULL;
1926
1927 strcpy(symmetric, sha1_to_hex(ours->object.sha1));
1928 strcpy(symmetric + 40, "...");
1929 strcpy(symmetric + 43, sha1_to_hex(theirs->object.sha1));
1930
1931 init_revisions(&revs, NULL);
1932 setup_revisions(rev_argc, rev_argv, &revs, NULL);
Stefan Beller81c3ce32014-08-10 21:33:26[diff] [blame]1933 if (prepare_revision_walk(&revs))
1934 die("revision walk setup failed");
Junio C Hamano6d21bf92008-07-02 07:51:18[diff] [blame]1935
1936 /* ... and count the commits on each side. */
1937 *num_ours = 0;
1938 *num_theirs = 0;
1939 while (1) {
1940 struct commit *c = get_revision(&revs);
1941 if (!c)
1942 break;
1943 if (c->object.flags & SYMMETRIC_LEFT)
1944 (*num_ours)++;
1945 else
1946 (*num_theirs)++;
1947 }
Junio C Hamanoc0234b22008-07-03 19:09:48[diff] [blame]1948
1949 /* clear object flags smudged by the above traversal */
1950 clear_commit_marks(ours, ALL_REV_FLAGS);
1951 clear_commit_marks(theirs, ALL_REV_FLAGS);
Junio C Hamano6d21bf92008-07-02 07:51:18[diff] [blame]1952 return 1;
1953}
1954
1955/*
1956 * Return true when there is anything to report, otherwise false.
1957 */
1958int format_tracking_info(struct branch *branch, struct strbuf *sb)
1959{
Jiang Xinf2e08732013-08-26 07:02:48[diff] [blame]1960 int ours, theirs;
Stefan Beller2f50bab2014-08-10 19:43:33[diff] [blame]1961 char *base;
Jiang Xinf2e08732013-08-26 07:02:48[diff] [blame]1962 int upstream_is_gone = 0;
Junio C Hamano6d21bf92008-07-02 07:51:18[diff] [blame]1963
Jiang Xinf2e08732013-08-26 07:02:48[diff] [blame]1964 switch (stat_tracking_info(branch, &ours, &theirs)) {
1965 case 0:
1966 /* no base */
Junio C Hamano6d21bf92008-07-02 07:51:18[diff] [blame]1967 return 0;
Jiang Xinf2e08732013-08-26 07:02:48[diff] [blame]1968 case -1:
1969 /* with "gone" base */
1970 upstream_is_gone = 1;
1971 break;
1972 default:
Jiang Xinf2e08732013-08-26 07:02:48[diff] [blame]1973 /* with base */
1974 break;
1975 }
Junio C Hamano6d21bf92008-07-02 07:51:18[diff] [blame]1976
Stefan Beller2f50bab2014-08-10 19:43:33[diff] [blame]1977 base = shorten_unambiguous_ref(branch->merge[0]->dst, 0);
Jiang Xinf2e08732013-08-26 07:02:48[diff] [blame]1978 if (upstream_is_gone) {
1979 strbuf_addf(sb,
1980 _("Your branch is based on '%s', but the upstream is gone.\n"),
1981 base);
1982 if (advice_status_hints)
1983 strbuf_addf(sb,
1984 _(" (use \"git branch --unset-upstream\" to fixup)\n"));
Jiang Xinf2234592013-08-26 07:02:49[diff] [blame]1985 } else if (!ours && !theirs) {
1986 strbuf_addf(sb,
1987 _("Your branch is up-to-date with '%s'.\n"),
1988 base);
Jiang Xinf2e08732013-08-26 07:02:48[diff] [blame]1989 } else if (!theirs) {
Jiang Xin8a5b7492012-02-02 02:02:23[diff] [blame]1990 strbuf_addf(sb,
1991 Q_("Your branch is ahead of '%s' by %d commit.\n",
1992 "Your branch is ahead of '%s' by %d commits.\n",
Jiang Xinf2e08732013-08-26 07:02:48[diff] [blame]1993 ours),
1994 base, ours);
Jeff King491e3072012-12-03 06:16:57[diff] [blame]1995 if (advice_status_hints)
1996 strbuf_addf(sb,
1997 _(" (use \"git push\" to publish your local commits)\n"));
Jiang Xinf2e08732013-08-26 07:02:48[diff] [blame]1998 } else if (!ours) {
Jiang Xin8a5b7492012-02-02 02:02:23[diff] [blame]1999 strbuf_addf(sb,
2000 Q_("Your branch is behind '%s' by %d commit, "
2001 "and can be fast-forwarded.\n",
2002 "Your branch is behind '%s' by %d commits, "
2003 "and can be fast-forwarded.\n",
Jiang Xinf2e08732013-08-26 07:02:48[diff] [blame]2004 theirs),
2005 base, theirs);
Jeff King491e3072012-12-03 06:16:57[diff] [blame]2006 if (advice_status_hints)
2007 strbuf_addf(sb,
2008 _(" (use \"git pull\" to update your local branch)\n"));
Matthieu Moyc190ced2012-11-15 10:45:00[diff] [blame]2009 } else {
Jiang Xin8a5b7492012-02-02 02:02:23[diff] [blame]2010 strbuf_addf(sb,
2011 Q_("Your branch and '%s' have diverged,\n"
2012 "and have %d and %d different commit each, "
2013 "respectively.\n",
2014 "Your branch and '%s' have diverged,\n"
2015 "and have %d and %d different commits each, "
2016 "respectively.\n",
Jiang Xinf2e08732013-08-26 07:02:48[diff] [blame]2017 theirs),
2018 base, ours, theirs);
Jeff King491e3072012-12-03 06:16:57[diff] [blame]2019 if (advice_status_hints)
2020 strbuf_addf(sb,
2021 _(" (use \"git pull\" to merge the remote branch into yours)\n"));
Matthieu Moyc190ced2012-11-15 10:45:00[diff] [blame]2022 }
Stefan Beller2f50bab2014-08-10 19:43:33[diff] [blame]2023 free(base);
Junio C Hamano6d21bf92008-07-02 07:51:18[diff] [blame]2024 return 1;
2025}
Jay Soffian454e2022009-02-25 08:32:11[diff] [blame]2026
2027static int one_local_ref(const char *refname, const unsigned char *sha1, int flag, void *cb_data)
2028{
2029 struct ref ***local_tail = cb_data;
2030 struct ref *ref;
2031 int len;
2032
2033 /* we already know it starts with refs/ to get here */
Michael Haggerty8d9c5012011-09-15 21:10:25[diff] [blame]2034 if (check_refname_format(refname + 5, 0))
Jay Soffian454e2022009-02-25 08:32:11[diff] [blame]2035 return 0;
2036
2037 len = strlen(refname) + 1;
2038 ref = xcalloc(1, sizeof(*ref) + len);
2039 hashcpy(ref->new_sha1, sha1);
2040 memcpy(ref->name, refname, len);
2041 **local_tail = ref;
2042 *local_tail = &ref->next;
2043 return 0;
2044}
2045
2046struct ref *get_local_heads(void)
2047{
Nguyễn Thái Ngọc Duy55f05662009-04-16 22:16:23[diff] [blame]2048 struct ref *local_refs = NULL, **local_tail = &local_refs;
Jay Soffian454e2022009-02-25 08:32:11[diff] [blame]2049 for_each_ref(one_local_ref, &local_tail);
2050 return local_refs;
2051}
Jay Soffian8ef51732009-02-25 08:32:13[diff] [blame]2052
Jay Soffian4229f1f2009-02-27 19:10:05[diff] [blame]2053struct ref *guess_remote_head(const struct ref *head,
2054 const struct ref *refs,
2055 int all)
Jay Soffian8ef51732009-02-25 08:32:13[diff] [blame]2056{
Jay Soffian8ef51732009-02-25 08:32:13[diff] [blame]2057 const struct ref *r;
Jay Soffian4229f1f2009-02-27 19:10:05[diff] [blame]2058 struct ref *list = NULL;
2059 struct ref **tail = &list;
Jay Soffian8ef51732009-02-25 08:32:13[diff] [blame]2060
Jay Soffian6cb4e6c2009-02-25 08:32:14[diff] [blame]2061 if (!head)
Jay Soffian8ef51732009-02-25 08:32:13[diff] [blame]2062 return NULL;
2063
Jeff Kingfbb074c2009-02-27 19:10:06[diff] [blame]2064 /*
2065 * Some transports support directly peeking at
2066 * where HEAD points; if that is the case, then
2067 * we don't have to guess.
2068 */
2069 if (head->symref)
2070 return copy_ref(find_ref_by_name(refs, head->symref));
2071
Jay Soffian8ef51732009-02-25 08:32:13[diff] [blame]2072 /* If refs/heads/master could be right, it is. */
Jay Soffian4229f1f2009-02-27 19:10:05[diff] [blame]2073 if (!all) {
2074 r = find_ref_by_name(refs, "refs/heads/master");
2075 if (r && !hashcmp(r->old_sha1, head->old_sha1))
2076 return copy_ref(r);
2077 }
Jay Soffian8ef51732009-02-25 08:32:13[diff] [blame]2078
2079 /* Look for another ref that points there */
Jay Soffian4229f1f2009-02-27 19:10:05[diff] [blame]2080 for (r = refs; r; r = r->next) {
Jeff King61adfd32011-06-03 05:11:13[diff] [blame]2081 if (r != head &&
Christian Couder59556542013-11-30 20:55:40[diff] [blame]2082 starts_with(r->name, "refs/heads/") &&
Jeff King61adfd32011-06-03 05:11:13[diff] [blame]2083 !hashcmp(r->old_sha1, head->old_sha1)) {
Jay Soffian4229f1f2009-02-27 19:10:05[diff] [blame]2084 *tail = copy_ref(r);
2085 tail = &((*tail)->next);
2086 if (!all)
2087 break;
2088 }
2089 }
Jay Soffian8ef51732009-02-25 08:32:13[diff] [blame]2090
Jay Soffian4229f1f2009-02-27 19:10:05[diff] [blame]2091 return list;
Jay Soffian8ef51732009-02-25 08:32:13[diff] [blame]2092}
Jay Soffianf2ef6072009-11-10 05:03:31[diff] [blame]2093
2094struct stale_heads_info {
Jay Soffianf2ef6072009-11-10 05:03:31[diff] [blame]2095 struct string_list *ref_names;
2096 struct ref **stale_refs_tail;
Carlos Martín Nietoed43de62011-10-15 05:04:25[diff] [blame]2097 struct refspec *refs;
2098 int ref_count;
Jay Soffianf2ef6072009-11-10 05:03:31[diff] [blame]2099};
2100
2101static int get_stale_heads_cb(const char *refname,
2102 const unsigned char *sha1, int flags, void *cb_data)
2103{
2104 struct stale_heads_info *info = cb_data;
Carlos Martín Nietoe6f63712014-02-27 09:00:10[diff] [blame]2105 struct string_list matches = STRING_LIST_INIT_DUP;
Carlos Martín Nietoed43de62011-10-15 05:04:25[diff] [blame]2106 struct refspec query;
Carlos Martín Nietoe6f63712014-02-27 09:00:10[diff] [blame]2107 int i, stale = 1;
Carlos Martín Nietoed43de62011-10-15 05:04:25[diff] [blame]2108 memset(&query, 0, sizeof(struct refspec));
2109 query.dst = (char *)refname;
2110
Carlos Martín Nietoe6f63712014-02-27 09:00:10[diff] [blame]2111 query_refspecs_multiple(info->refs, info->ref_count, &query, &matches);
2112 if (matches.nr == 0)
2113 goto clean_exit; /* No matches */
Carlos Martín Nietoed43de62011-10-15 05:04:25[diff] [blame]2114
2115 /*
2116 * If we did find a suitable refspec and it's not a symref and
2117 * it's not in the list of refs that currently exist in that
Carlos Martín Nietoe6f63712014-02-27 09:00:10[diff] [blame]2118 * remote, we consider it to be stale. In order to deal with
2119 * overlapping refspecs, we need to go over all of the
2120 * matching refs.
Carlos Martín Nietoed43de62011-10-15 05:04:25[diff] [blame]2121 */
Carlos Martín Nietoe6f63712014-02-27 09:00:10[diff] [blame]2122 if (flags & REF_ISSYMREF)
2123 goto clean_exit;
2124
2125 for (i = 0; stale && i < matches.nr; i++)
2126 if (string_list_has_string(info->ref_names, matches.items[i].string))
2127 stale = 0;
2128
2129 if (stale) {
Carlos Martín Nietoed43de62011-10-15 05:04:25[diff] [blame]2130 struct ref *ref = make_linked_ref(refname, &info->stale_refs_tail);
2131 hashcpy(ref->new_sha1, sha1);
Jay Soffianf2ef6072009-11-10 05:03:31[diff] [blame]2132 }
Carlos Martín Nietoed43de62011-10-15 05:04:25[diff] [blame]2133
Carlos Martín Nietoe6f63712014-02-27 09:00:10[diff] [blame]2134clean_exit:
2135 string_list_clear(&matches, 0);
Jay Soffianf2ef6072009-11-10 05:03:31[diff] [blame]2136 return 0;
2137}
2138
Carlos Martín Nietoed43de62011-10-15 05:04:25[diff] [blame]2139struct ref *get_stale_heads(struct refspec *refs, int ref_count, struct ref *fetch_map)
Jay Soffianf2ef6072009-11-10 05:03:31[diff] [blame]2140{
2141 struct ref *ref, *stale_refs = NULL;
Thiago Farina183113a2010-07-04 19:46:19[diff] [blame]2142 struct string_list ref_names = STRING_LIST_INIT_NODUP;
Jay Soffianf2ef6072009-11-10 05:03:31[diff] [blame]2143 struct stale_heads_info info;
Jay Soffianf2ef6072009-11-10 05:03:31[diff] [blame]2144 info.ref_names = &ref_names;
2145 info.stale_refs_tail = &stale_refs;
Carlos Martín Nietoed43de62011-10-15 05:04:25[diff] [blame]2146 info.refs = refs;
2147 info.ref_count = ref_count;
Jay Soffianf2ef6072009-11-10 05:03:31[diff] [blame]2148 for (ref = fetch_map; ref; ref = ref->next)
Julian Phillips1d2f80f2010-06-25 23:41:38[diff] [blame]2149 string_list_append(&ref_names, ref->name);
Michael Haggerty3383e192014-11-25 08:02:35[diff] [blame]2150 string_list_sort(&ref_names);
Jay Soffianf2ef6072009-11-10 05:03:31[diff] [blame]2151 for_each_ref(get_stale_heads_cb, &info);
2152 string_list_clear(&ref_names, 0);
2153 return stale_refs;
2154}
Junio C Hamano28f5d172013-07-08 22:34:36[diff] [blame]2155
2156/*
2157 * Compare-and-swap
2158 */
Junio C Hamanoa355b112015-01-14 22:58:44[diff] [blame]2159static void clear_cas_option(struct push_cas_option *cas)
Junio C Hamano28f5d172013-07-08 22:34:36[diff] [blame]2160{
2161 int i;
2162
2163 for (i = 0; i < cas->nr; i++)
2164 free(cas->entry[i].refname);
2165 free(cas->entry);
2166 memset(cas, 0, sizeof(*cas));
2167}
2168
2169static struct push_cas *add_cas_entry(struct push_cas_option *cas,
2170 const char *refname,
2171 size_t refnamelen)
2172{
2173 struct push_cas *entry;
2174 ALLOC_GROW(cas->entry, cas->nr + 1, cas->alloc);
2175 entry = &cas->entry[cas->nr++];
2176 memset(entry, 0, sizeof(*entry));
2177 entry->refname = xmemdupz(refname, refnamelen);
2178 return entry;
2179}
2180
2181int parse_push_cas_option(struct push_cas_option *cas, const char *arg, int unset)
2182{
2183 const char *colon;
2184 struct push_cas *entry;
2185
2186 if (unset) {
2187 /* "--no-<option>" */
2188 clear_cas_option(cas);
2189 return 0;
2190 }
2191
2192 if (!arg) {
2193 /* just "--<option>" */
2194 cas->use_tracking_for_rest = 1;
2195 return 0;
2196 }
2197
2198 /* "--<option>=refname" or "--<option>=refname:value" */
2199 colon = strchrnul(arg, ':');
2200 entry = add_cas_entry(cas, arg, colon - arg);
2201 if (!*colon)
2202 entry->use_tracking = 1;
2203 else if (get_sha1(colon + 1, entry->expect))
2204 return error("cannot parse expected object name '%s'", colon + 1);
2205 return 0;
2206}
2207
2208int parseopt_push_cas_option(const struct option *opt, const char *arg, int unset)
2209{
2210 return parse_push_cas_option(opt->value, arg, unset);
2211}
Junio C Hamano91048a92013-07-09 18:01:06[diff] [blame]2212
2213int is_empty_cas(const struct push_cas_option *cas)
2214{
2215 return !cas->use_tracking_for_rest && !cas->nr;
2216}
2217
2218/*
2219 * Look at remote.fetch refspec and see if we have a remote
2220 * tracking branch for the refname there. Fill its current
2221 * value in sha1[].
2222 * If we cannot do so, return negative to signal an error.
2223 */
2224static int remote_tracking(struct remote *remote, const char *refname,
2225 unsigned char sha1[20])
2226{
2227 char *dst;
2228
2229 dst = apply_refspecs(remote->fetch, remote->fetch_refspec_nr, refname);
2230 if (!dst)
2231 return -1; /* no tracking ref for refname at remote */
2232 if (read_ref(dst, sha1))
2233 return -1; /* we know what the tracking ref is but we cannot read it */
2234 return 0;
2235}
2236
2237static void apply_cas(struct push_cas_option *cas,
2238 struct remote *remote,
2239 struct ref *ref)
2240{
2241 int i;
2242
2243 /* Find an explicit --<option>=<name>[:<value>] entry */
2244 for (i = 0; i < cas->nr; i++) {
2245 struct push_cas *entry = &cas->entry[i];
Michael Haggerty54457fe2014-01-14 03:16:07[diff] [blame]2246 if (!refname_match(entry->refname, ref->name))
Junio C Hamano91048a92013-07-09 18:01:06[diff] [blame]2247 continue;
2248 ref->expect_old_sha1 = 1;
2249 if (!entry->use_tracking)
2250 hashcpy(ref->old_sha1_expect, cas->entry[i].expect);
2251 else if (remote_tracking(remote, ref->name, ref->old_sha1_expect))
2252 ref->expect_old_no_trackback = 1;
2253 return;
2254 }
2255
2256 /* Are we using "--<option>" to cover all? */
2257 if (!cas->use_tracking_for_rest)
2258 return;
2259
2260 ref->expect_old_sha1 = 1;
2261 if (remote_tracking(remote, ref->name, ref->old_sha1_expect))
2262 ref->expect_old_no_trackback = 1;
2263}
2264
2265void apply_push_cas(struct push_cas_option *cas,
2266 struct remote *remote,
2267 struct ref *remote_refs)
2268{
2269 struct ref *ref;
2270 for (ref = remote_refs; ref; ref = ref->next)
2271 apply_cas(cas, remote, ref);
2272}